{"id":17550,"date":"2022-01-30T14:03:01","date_gmt":"2022-01-30T08:33:01","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=17550"},"modified":"2024-10-08T11:59:40","modified_gmt":"2024-10-08T06:29:40","slug":"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/iit-jee\/study-materials\/chemistry\/jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium\/","title":{"rendered":"JEE Main Previous Year Papers Questions With Solutions Chemistry Chemical and iconic Equilibrium"},"content":{"rendered":"<h2>JEE Main Previous Year Papers Questions With Solutions Chemistry Chemical and Iconic Equilibrium<\/h2>\n<p><strong>1.M NaCl and 1 M HC1 are present in an aqueous solution. The solution is (2002)<br \/>\n1)not a buffer solution with p<sup>H<\/sup> &lt; 7<br \/>\n2)not a buffer solution with p<sup>H<\/sup> &gt; 7<br \/>\n3)a buffer solution with p<sup>H<\/sup> &lt; 7<br \/>\n4)a buffer solution with p<sup>H<\/sup> &gt; 7<\/strong><br \/>\n<strong>Ans.<\/strong>(1) A buffer is a solution of weak acid and its salt  with strong base and vice versa. HCl is strong acid and NaCl is its salt with strong base. pH is less than 7 due to HCl.<\/p>\n<p><strong>2.Species acting as both Bronsted acid and base is   (2002)<br \/>\n1)HS0<sub>4<\/sub>-1 2) Na<sub>2<\/sub>C0<sub>3<\/sub> 3) NH<sub>3<\/sub> 4) OH-1<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906933102_f8b86ca503_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-27\" width=\"296\" height=\"72\" \/><\/p>\n<p><strong>3.Let the solubility of an aqueous solution of Mg(OH)<sub>2<\/sub> be x, then its k<sub>sp<\/sub> is      (2002)<br \/>\n1)4x<sup>3<\/sup>      2) 108x<sup>5<\/sup>         3) 27x<sup>4<\/sup>           4) 9x<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726975280_1b1dc9efa6_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-28\" width=\"235\" height=\"98\" \/><\/p>\n<p><strong>4.The solubility of Mg(OH)<sub>2<\/sub> is S moles \/ litre. The solubility product under the same condition is            (2002)<br \/>\n1)4S<sup>3<\/sup>         2) 3S<sup>4<\/sup>                 3) 4S<sup>2<\/sup>             4) S<sup>3<\/sup><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932934941_fc5e9b6e05_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-29\" width=\"346\" height=\"100\" \/><\/p>\n<p><strong>5.Change in volume of the system does not alter the number of moles in which of the following equilibria ? (2002)<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932948851_4350059111_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-1\" width=\"269\" height=\"130\" \/><br \/>\n<strong>Ans.<\/strong>(1) In this reaction the ratio of number of moles of reactants to products is same, hence change l in volume will not alter the number of moles<\/p>\n<div class=\"card\" style=\"text-align: center;\"><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/test-series\/jee-12-aits?utm_source=surge&amp;utm_medium=Org&amp;utm_campaign=AITS\"><br \/>\n<img loading=\"lazy\" class=\" lazyloaded\" style=\"width: 100%; border-radius: 10px;\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/10\/class-12-jee-test-series.jpg\" alt=\"class 12 jee test series\" width=\"1201\" height=\"636\" data-src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/10\/class-12-jee-test-series.jpg\" \/><\/a><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/test-series\/jee-12-aits?utm_source=surge&amp;utm_medium=Org&amp;utm_campaign=AITS\"><button><strong>All India Test Series for Class 12 JEE Main &amp; Advanced 2025<\/strong><\/button><\/a><\/p>\n<div style=\"text-align: center;\">Boost Your Preparation With Our All India Test Series for Class 12 JEE Main &amp; Advanced 2025<\/div>\n<\/div>\n<p><strong>6.In which of the following reactions, increase in the volume at constant temperature does not affect the number of moles at equilibrium(2002)<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906945812_b758dcae68_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-2\" width=\"369\" height=\"74\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726974990_659e1accf1_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-30\" width=\"373\" height=\"51\" \/><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932948391_347bfa24a9_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-3\" width=\"411\" height=\"74\" \/><br \/>\n<strong>Ans<\/strong>.<br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726974740_1ff8a250ba_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-31\" width=\"360\" height=\"159\" \/><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394939494_096947065a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-4\" width=\"413\" height=\"195\" \/><br \/>\n<strong>Ans.<\/strong>(2) An acidic solution cannot have a pH &gt; 7.<\/p>\n<p><strong>9.The solubility in water of a sparingly soluble salt AB<sub>2<\/sub> is 1.0 x 10<sup>-5<\/sup> molL\u201d<sup>1<\/sup>. Its solubility product number will be            (2003)<br \/>\n1)4 x 10<sup>-10<\/sup>        2) 1 x 10-<sup>15<\/sup><br \/>\n3) 1 x 10-<sup>10<\/sup>      4) 4 x 10<sup>-15<\/sup><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394926414_f0d3e5a2b2_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-32\" width=\"375\" height=\"97\" \/><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25398230933_57c65817d5_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-5\" width=\"509\" height=\"192\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726974020_428e6348ee_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-33\" width=\"331\" height=\"96\" \/><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932947081_8dac1fcf80_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-6\" width=\"468\" height=\"262\" \/><br \/>\n<strong>Ans.<\/strong>(2) Due to exothermicity of reaction low or optimum temperature will be required. Since 3 v moles are changing to 2 moles. High pressure will be required.<\/p>\n<div class=\"card\" style=\"text-align: center;\"><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/online-mock-tests?utm_source=surge&amp;utm_medium=interlinking\"><br \/>\n<img loading=\"lazy\" class=\" lazyloaded\" style=\"width: 100%; border-radius: 10px;\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/09\/cvc.png\" alt=\"online mock test\" width=\"1201\" height=\"636\" data-src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/09\/cvc.png\" \/><\/a><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/online-mock-tests?utm_source=surge&amp;utm_medium=interlinking\"><button><strong>Online Mock Test<\/strong><\/button><\/a><\/p>\n<div style=\"text-align: center;\">Boost Your Preparation With Our Free Online Mock Tests For IIT-JEE, NEET And CBSE Exams<\/div>\n<\/div>\n<p><strong>12.Which one of the following substances has the highest proton affinity ?     (2003)<br \/>\n1)H<sub>2<\/sub>S 2) NH<sub>3<\/sub> 3) PH<sub>3<\/sub> 4) H<sub>2<\/sub>0<\/strong><br \/>\n<strong>Ans.<\/strong>(2) H<sub>2<\/sub>S is more acidic.<\/p>\n<p><strong>13.In a 0.2 molal aqueous solution of a weak acid HX the degree of ionization is 0.3. Taking k<sub>f <\/sub>for water as 1.85, the freezing point of the  solution will be nearest to   (2003)<br \/>\n1) \u2013 0.360\u00b0C                    2) \u2013 0.260\u00b0C<br \/>\n3) + 0.480\u00b0C                   4) \u2013 0.480\u00b0C<\/strong><br \/>\n<strong>Ans.<\/strong>(4) Decrease by 1.85 x 0.3 x 1.3 = 0.48\u00b0C<\/p>\n<p><strong>14.The conjugate base of H<sub>2<\/sub>P0<sub>4<\/sub>\u2013 is (2004)<br \/>\n1) P0<sub>4<\/sub><sup>3<\/sup>\u2013 2) HP0<sub>4<\/sub><sup>2-<\/sup> 3)H<sub>3<\/sub>P0<sub>4<\/sub> 4)P<sub>2<\/sub>0<sub>5<\/sub><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25727864730_1b4d7897c9_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-14\" width=\"341\" height=\"57\" \/><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25398229533_d32e130029_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-7\" width=\"472\" height=\"155\" \/><\/p>\n<p><strong>Ans.<\/strong>(2) Applying law of mass action, the expression for K is obtained. Only 0<sub>2<\/sub> is a gas and hence its active mass only appear in K.<\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25398229323_382dbca482_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-8\" width=\"411\" height=\"130\" \/><\/p>\n<p><strong>Ans.<\/strong>(1) Kp = Kc (RT)<sup>in   .<\/sup>Here, An is 1 \u2013 (1 + 1) = \u2013 1.<\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932945721_79909ae753_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-9\" width=\"401\" height=\"192\" \/><\/p>\n<p><strong>Ans.<\/strong>(4) As per property of equilibria, reverse the equation and divide it by 2.<\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726984410_9ca1ac5b8e_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-10\" width=\"406\" height=\"148\" \/><\/p>\n<p><strong>Ans.<\/strong>(2) If \u2018s\u2019 is the solubility Ksp = 108s<sup>5 <\/sup>1 x 4<sup>4<\/sup> x s<sup>1+4<\/sup> = 256 s<sup>5<\/sup> = Ksp<\/p>\n<p><strong>19.The solubility product of a salt having general formula MX<sub>2<\/sub>, in water is : 4xl0<sup>-12<\/sup>. The concentration of M<sup>2+<\/sup> ions in the aqueous solution of the salt is     (2005)<br \/>\n1) 2.0 x 10.6 M              2) 1.0 x 10.4 M<br \/>\n3) 1.6 x 10.4 M              4) 4.0 x 10.10 M<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25933857211_ae1dbbff3d_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-19\" width=\"357\" height=\"111\" \/><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932945211_42bba7dab1_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-11\" width=\"409\" height=\"256\" \/><\/p>\n<p><strong>Ans.<\/strong>(4) An increase in the concentration of a reactant at equilibrium, the forward reaction is favoured. Hence, adding F<sub>2<\/sub><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906941982_aeb57d01eb_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-12\" width=\"407\" height=\"224\" \/><\/p>\n<p><strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25907838542_1799958928_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-21\" width=\"238\" height=\"98\" \/><\/p>\n<p><strong>22.Hydrogen ion concentration in mol L<sup>-1<\/sup> in a solution of pH = 5.4 will be  (2005)<br \/>\n1) 3.98 x 10<sup>8<\/sup>                2) 3.88 x 10<sup>6<\/sup><br \/>\n3) 3.68 x 10<sup>-6<\/sup>                  4) 3.98 x 10<sup>-6<\/sup><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25933856301_de4915d910_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-22\" width=\"260\" height=\"88\" \/><\/p>\n<p><strong>23.What is the conjugate base of OH<sup>\u2013<\/sup> ? (2005)<br \/>\n1) 0<sub>2<\/sub>          2) H<sub>2<\/sub>0          3) 0<sup>\u2013<\/sup>            4) O<sup>-2<\/sup><br \/>\n<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25907838422_7dc9772d9c_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-23\" width=\"285\" height=\"67\" \/><\/p>\n<p><strong>24.An amount of solid NH<sub>4<\/sub>HS is placed in a flask already containing ammonia gas at a certain temperature and 0.5 atm. Ammonium hydrogen sulphide decomposes to yield NH<sub>3 <\/sub>and 1I<sub>2<\/sub>S gases in the flask. When the decomposition reaction reaches equilibrium, the total pressure in the flask rises to 0.84 atm. The equilibrium constant for NII<sub>4<\/sub>HS decomposition at this temperature is (2005)<br \/>\n1) 0.30   2) 0.18  3) 0.17  4) 0.11<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25399064183_0d8bfbddcc_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-24\" width=\"340\" height=\"172\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394935644_8d0f606596_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-13\" width=\"375\" height=\"216\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25933855981_70bc54ff3f_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-25\" width=\"242\" height=\"77\" \/><\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394934724_4798e8530d_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-14\" width=\"483\" height=\"191\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25933855881_7084a21929_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-26\" width=\"406\" height=\"90\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394934024_e038056fc0_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-15\" width=\"429\" height=\"203\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25395827034_e1d46d85d0_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-27\" width=\"356\" height=\"304\" \/><\/p>\n<div class=\"card\" style=\"text-align: center;\"><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/one-stop-solutions-for-jee-main-prep?utm_source=surge&amp;utm_medium=interlinking\"><br \/>\n<img loading=\"lazy\" class=\" lazyloaded\" style=\"width: 100%; border-radius: 10px;\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/09\/one-stop-solution-for-jee.jpg\" alt=\"One Stop Solution for JEE Prep\" width=\"1201\" height=\"636\" data-src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2024\/09\/one-stop-solution-for-jee.jpg\" \/><\/a><a class=\"btn btn-primary\" href=\"https:\/\/infinitylearn.com\/one-stop-solutions-for-jee-main-prep?utm_source=surge&amp;utm_medium=interlinking\"><button><strong>One Stop Solution for JEE Prep<\/strong><\/button><\/a><\/p>\n<div>JEE Main One-Stop Solution: Your complete guide to acing the JEE Main exam. Get Infinity Learn expert tips, study materials, and practice tests for success.<\/div>\n<\/div>\n<p><strong>28.The pKa of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid is ionized is (2007)<br \/>\n1) 4.5          2) 2.5           3) 9.5           4) 7.0<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25399063563_9491f75b98_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-28\" width=\"307\" height=\"272\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25932941431_a5e989cacd_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-16\" width=\"330\" height=\"238\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25395826534_c3a17f3f93_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-29\" width=\"310\" height=\"230\" \/><\/p>\n<p><strong>30.The first and second dissociation constants of an acid H<sub>2<\/sub>A are 1.0 x 10<sup>-5<\/sup> and 5.0 x 10\u201c<sup>10 <\/sup>respectively. The overall dissociation constant of the acid will be      (2007)<br \/>\n1) 5.0 x 10<sup>-5<\/sup>                    2) 5.0 x 10<sup>15<\/sup><br \/>\n3) 5.0 x 10<sup>-15<\/sup>                  4) 0.0 x 10<sup>5<\/sup><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25399063213_7e975f74a2_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-30\" width=\"305\" height=\"229\" \/><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25907837122_7f6ce1c3e3_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-30-1\" width=\"330\" height=\"150\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25398224183_7ae0ff2a0e_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-17\" width=\"365\" height=\"180\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25907836912_b1f8ea905d_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-31\" width=\"379\" height=\"267\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726979440_50ba4b2c67_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-18\" width=\"367\" height=\"232\" \/><br \/>\n<strong>Ans.<\/strong>(3) Equation (c) = equation (a) + equation (b). Thus K, = K,.K<sub>2<\/sub><\/p>\n<p><strong>33.Four species are listed below<br \/>\ni) HC0<sup>\u2013<\/sup>3; ii) H<sub>3<\/sub>0<sup>+<\/sup> iii) HSO<sup>\u2013<\/sup>4 iv) HS0<sub>3<\/sub>F<br \/>\nWhich one of the following is the correct sequence of thfflr acid strength ?            (2008)<br \/>\n1) iv &lt; ii &lt; iii &lt;i                       2) ii &lt; iii &lt; i &lt; iv<br \/>\n3) i &lt; iii &lt; ii &lt; iv                       4) iii &lt; i &lt; iv &lt; ii<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25933854251_f0b18b3064_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-33\" width=\"393\" height=\"29\" \/><\/p>\n<p><strong>34.The pK<sub>a<\/sub> of a weak acid, HA, is 4.80. The pK<sub>b <\/sub>of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be           (2008)<br \/>\n1) 9.58            2) 4.79             3) 7.01             4) 9.22<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25933854191_1171c5445a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-34\" width=\"366\" height=\"92\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394930744_14ee5d3a65_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-19\" width=\"399\" height=\"137\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25399061923_7f44dbd6a0_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-35\" width=\"409\" height=\"196\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906936072_910fc4311d_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-20\" width=\"448\" height=\"254\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25399061713_4a7cd047f7_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-36\" width=\"354\" height=\"224\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726977690_d9f114eb57_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-21\" width=\"373\" height=\"138\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25395824214_a34441ea1f_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-37\" width=\"374\" height=\"81\" \/><\/p>\n<p><strong>38.Solubility product of silver bromide is 5.0x 10<sup>-13<\/sup>. The quantity of potassium bromide (molar mass is 120g of mol<sup>-1<\/sup>) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is (2010)<br \/>\n1) 1.2 x 10-<sup>10<\/sup>g             2) 1.2 x 10-<sup>9<\/sup>g<br \/>\n3) 6.2 x 10-<sup>5<\/sup>g                4) 5.0 x 10-<sup>8<\/sup>g<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25727860760_87fe615978_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-38\" width=\"319\" height=\"274\" \/><\/p>\n<p><strong>39.At 25\u00b0C, the solubility product of Mg(OH)<sub>2<\/sub> is 1.0 10<sup>_n<\/sup>. At which pH, will Mg<sup>2+<\/sup> ions start precipitating in the form of Mg(OH)<sub>2<\/sub> from a solution of 0.001 M Mg<sup>2+<\/sup> ions ? (2010)<br \/>\n1)9              2) 10           3)11              4)8<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25933852521_55bbd496ff_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-39\" width=\"238\" height=\"150\" \/><\/p>\n<p><strong>40.The reduction potential of hydrogen half-cell will be negative if : (2011)<br \/>\n1)P(H<sub>2<\/sub>) = 2 atm and [H<sup>+<\/sup>] = 1.0 M<br \/>\n2)P(H<sub>2<\/sub>) = 2 atm and [H<sup>+<\/sup>] = 2.0 M l<br \/>\n3)P(H<sub>2<\/sub>) = 1 atm and [H<sup>+<\/sup>] = 2.0 M<br \/>\n4)P(H<sub>2<\/sub>) = 1 atm and [H<sup>+<\/sup>] = 1.0 M<\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25395823124_81a33b838a_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-40\" width=\"283\" height=\"94\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25906934812_93257ec208_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-22\" width=\"276\" height=\"167\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25395822854_c81f7f2651_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-41\" width=\"364\" height=\"138\" \/><\/p>\n<p><strong>42.The pH of a 0.1 molar solution of the acid HQ is 3. The value of the ionization constant Ka of this acid is     (2012)<br \/>\n1) 3\u00d710<sup>_1<\/sup>                        2) 1\u00d710<sup>-3<\/sup><br \/>\n3) 1\u00d710<sup>-5<\/sup>                         4) 1\u00d710<sup>-7<\/sup><\/strong><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25727859360_134f868c52_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-42\" width=\"267\" height=\"93\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25726976620_4c6ba254af_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-23\" width=\"315\" height=\"99\" \/><br \/>\n<strong>Ans.<\/strong>(4) If SRP value is high-powerful oxidising agent.<\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25398220373_95e2f00f48_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-24\" width=\"374\" height=\"183\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25395822504_5b4113afe6_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-44\" width=\"259\" height=\"200\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25398219983_b3be98eb48_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-25\" width=\"361\" height=\"126\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25907833932_169412c715_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-45\" width=\"238\" height=\"146\" \/><\/p>\n<p><img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25394927514_84f80c88ff_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-26\" width=\"366\" height=\"257\" \/><br \/>\n<strong>Ans.<\/strong><br \/>\n<img loading=\"lazy\" class=\"\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2021\/12\/25727859250_e9124945d2_o.png\" alt=\"jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium-46\" width=\"263\" height=\"223\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JEE Main Previous Year Papers Questions With Solutions Chemistry Chemical and Iconic Equilibrium 1.M NaCl and 1 M HC1 are [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"get JEE Main Previous Year Papers Questions With Solutions Chemistry Chemical and ionic Equilibrium at infinity learn","custom_permalink":"iit-jee\/study-materials\/chemistry\/jee-main-previous-year-papers-questions-with-solutions-chemistry-chemical-and-lonic-equilibrium\/"},"categories":[21],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - 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