{"id":659169,"date":"2023-06-27T23:01:53","date_gmt":"2023-06-27T17:31:53","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=659169"},"modified":"2025-02-28T16:22:01","modified_gmt":"2025-02-28T10:52:01","slug":"potassium-chromate-formula","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/potassium-chromate-formula\/","title":{"rendered":"Potassium chromate formula\u00a0"},"content":{"rendered":"<p><span data-contrast=\"auto\">Potassium chromate is a chemical compound with the formula K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Potassium chromate (K2CrO4) is a chemical compound that belongs to the chromate family. It is an inorganic salt that is commonly used in various industrial and laboratory applications. The compound appears as bright yellow crystals or a yellow powder.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\"> <\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Potassium chromate is primarily known for its role as an important chemical reagent. It is widely used in chemical laboratories for analytical purposes, such as in titration reactions and as an indicator in various chemical tests. The compound is also utilized in the production of other chemicals, including dyes, pigments, and chrome plating.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\"> <\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><b><span data-contrast=\"auto\">The formula of Potassium Chromate <\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\"> The chemical formula of potassium chromate is K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\">. It indicates that the compound contains two potassium ions (K+) and one chromate ion (CrO<\/span><span data-contrast=\"auto\">42-<\/span><span data-contrast=\"auto\">).<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><b><span data-contrast=\"auto\">Structure of Potassium Chromate<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\"> Potassium chromate has a crystal lattice structure, with potassium cations (K+) and chromate anions (CrO4<\/span><span data-contrast=\"auto\">2-<\/span><span data-contrast=\"auto\">) arranged in a three-dimensional pattern. The potassium ion is positively charged, while the chromate ion is negatively charged.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:2,&quot;335551620&quot;:2,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <img loading=\"lazy\" class=\"alignnone size-full wp-image-659176\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2023\/06\/Screenshot-2023-06-27-230137.png\" alt=\"\" width=\"243\" height=\"137\" \/><\/span><\/p>\n<p><b><span data-contrast=\"auto\">Physical properties of Potassium Chromate<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Appearance:<\/span><span data-contrast=\"auto\"> Potassium chromate typically appears as bright yellow crystals or a yellow powder.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Molecular<\/span> <span data-contrast=\"auto\">weight:<\/span><span data-contrast=\"auto\"> The molar mass of potassium chromate is 194.19 g\/mol.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Solubility:<\/span><span data-contrast=\"auto\"> Potassium chromate is soluble in water, meaning it readily dissolves in water to form a yellow solution.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><b><span data-contrast=\"auto\">Chemical properties of Potassium Chromate<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Oxidizing Agent:<\/span><span data-contrast=\"auto\"> Potassium chromate is a strong oxidizing agent, meaning it can cause the oxidation of other substances by accepting electrons.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Reactivity:<\/span><span data-contrast=\"auto\"> It can react with reducing agents and combustible materials, making it potentially hazardous when not handled properly.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Uses of Potassium Chromate<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Laboratory Reagent:<\/span><span data-contrast=\"auto\"> Potassium chromate is commonly used as a reagent in laboratory settings for various chemical analyses, including titrations and redox reactions.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Dye Production:<\/span><span data-contrast=\"auto\"> It is used in the production of certain dyes, pigments, and inks due to its yellow color.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Wood Preservation:<\/span><span data-contrast=\"auto\"> Potassium chromate has been used as a wood preservative to protect against decay and insect infestation. However, its use in this application has been restricted or banned in many countries due to environmental and health concerns.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><b><span data-contrast=\"auto\">Potassium Chromate (K<\/span><\/b><b><span data-contrast=\"auto\">2<\/span><\/b><b><span data-contrast=\"auto\">CrO<\/span><\/b><b><span data-contrast=\"auto\">4<\/span><\/b><b><span data-contrast=\"auto\">) Conclusion<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">It&#8217;s worth noting that potassium chromate should be handled with caution, as it is toxic and can pose environmental hazards. Proper safety measures and guidelines should be followed when working with this compound.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">In addition to its industrial applications, potassium chromate has certain uses in the field of biology and medicine. It is employed in certain laboratory tests and medical procedures, such as determining blood glucose levels and identifying certain types of bacteria.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\"> <\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">It is important to note that potassium chromate is a toxic substance and should be handled with caution. It poses health hazards if ingested, inhaled, or in contact with the skin or eyes. Proper safety precautions should be followed when working with this compound to ensure personal safety and prevent environmental contamination.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><b><span data-contrast=\"auto\">Solved examples on Potassium Chromate (K<\/span><\/b><b><span data-contrast=\"auto\">2<\/span><\/b><b><span data-contrast=\"auto\">CrO<\/span><\/b><b><span data-contrast=\"auto\">4<\/span><\/b><b><span data-contrast=\"auto\">) <\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Example 1: Calculate the number of moles of potassium chromate in 25 grams of K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   Solution:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Molar mass of K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> = (39.1 g\/mol \u00d7 2) + (52.0 g\/mol + 16.0 g\/mol \u00d7 4)<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">                          = 194.19 g\/mol<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Given mass of K2CrO4 = 25 grams<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Number of moles of K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> = Given mass \/ Molar mass<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">                              = 25 g \/ 194.19 g\/mol<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">                              \u2248 0.129 moles<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   Therefore, there are approximately 0.129 moles of potassium chromate in 25 grams of K2CrO4.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Example 2: How many grams of potassium chromate are required to prepare 500 mL of a 0.2 M K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> solution?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   Solution:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Molar mass of K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> = 194.19 g\/mol<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Molarity (M) of K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> solution = 0.2 mol\/L<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Volume of K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> solution = 500 mL = 0.5 L<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Number of moles of K2CrO4 required = Molarity \u00d7 Volume<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">                                       = 0.2 mol\/L \u00d7 0.5 L<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">                                       = 0.1 moles<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   &#8211; Mass of K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> required = Number of moles \u00d7 Molar mass<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">                            = 0.1 moles \u00d7 194.19 g\/mol<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">                            = 19.42 grams<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">   Therefore, approximately 19.42 grams of potassium chromate are required to prepare 500 mL of a 0.2 M K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\"> solution.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">These examples demonstrate the application of molar mass calculations, mole ratios, and concentration calculations in solving problems related to potassium chromate.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><b><span data-contrast=\"auto\">Frequently asked questions on Potassium Chromate <\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">1: Why potassium chromate is used as an indicator?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Answer: Potassium chromate (K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\">) is used as an indicator in various chemical reactions and analytical processes due to its distinct color change at specific pH levels. The color change serves as a visual signal to indicate the endpoint or completion of a reaction. Here&#8217;s why potassium chromate is commonly used as an indicator:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Acid-Base Titrations<\/span><span data-contrast=\"auto\">: Potassium chromate is frequently employed as an indicator in acid-base titrations. It undergoes a color change from yellow to orange when the pH of the solution shifts from acidic to slightly alkaline. The color transition occurs near a pH range of 5.0 to 6.8. This color change signals the equivalence point of the titration, indicating that the reaction has reached completion.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Redox Reactions:<\/span><span data-contrast=\"auto\"> Potassium chromate is also utilized as an indicator in certain redox (oxidation-reduction) reactions. It acts as a self-indicator, undergoing a color change during the course of the reaction. For instance, in the presence of a reducing agent, such as ferrous ions (Fe<\/span><span data-contrast=\"auto\">2+<\/span><span data-contrast=\"auto\">), the yellow potassium chromate solution turns to green due to the formation of chromium(III) ions (Cr<\/span><span data-contrast=\"auto\">3+<\/span><span data-contrast=\"auto\">).<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">2: Is potassium chromate diamagnetic or paramagnetic?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Answer: Potassium chromate (K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\">) is paramagnetic. Paramagnetic substances are those that contain unpaired electrons in their atomic or molecular orbitals, which results in the presence of magnetic properties. In the case of potassium chromate, the chromium (Cr) atom in its chemical structure has unpaired electrons in its d-orbitals. As a result, it exhibits paramagnetic behavior and can be attracted by an external magnetic field.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">3: Why potassium chromate is used in Mohr method?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Answer: Potassium chromate (K2CrO4) is used in the Mohr method, which is a widely used titration technique to determine the concentration of chloride ions (Cl-) in a solution. Here&#8217;s why potassium chromate is employed in the Mohr method:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Indicator:<\/span><span data-contrast=\"auto\"> In the Mohr method, potassium chromate acts as an indicator to visually detect the endpoint of the titration. Initially, a known volume of the chloride-containing solution is titrated with a silver nitrate (AgNO3) solution of known concentration. As silver ions (Ag+) are added to the solution, they react with chloride ions to form a white precipitate of silver chloride (AgCl).<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">&#8211; <\/span><span data-contrast=\"auto\">Color Change:<\/span><span data-contrast=\"auto\"> The role of potassium chromate is to provide a color change during the titration process. Initially, potassium chromate imparts a yellow color to the solution. As silver ions are added and chloride ions are consumed, the silver ions begin to react with the excess potassium chromate, forming a red-brown precipitate of silver chromate (Ag2CrO4). The appearance of this red-brown color signals the endpoint of the titration, indicating that all the chloride ions have reacted with the silver ions.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">By using potassium chromate as an indicator, the endpoint of the titration can be easily identified, allowing for accurate determination of the chloride concentration. The Mohr method offers a relatively simple and cost-effective way to measure chloride ions in various samples, including water, biological fluids, and industrial processes.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">4: What type of bond is potassium chromate?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Answer:<\/span> <span data-contrast=\"auto\">Potassium chromate (K<\/span><span data-contrast=\"auto\">2<\/span><span data-contrast=\"auto\">CrO<\/span><span data-contrast=\"auto\">4<\/span><span data-contrast=\"auto\">) contains both ionic and covalent bonds. The compound consists of potassium ions (K+) and chromate ions (CrO4<\/span><span data-contrast=\"auto\">2-<\/span><span data-contrast=\"auto\">). The potassium ion forms an ionic bond with the chromate ion, resulting in the overall ionic character of the compound.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">The chromate ion (CrO4<\/span><span data-contrast=\"auto\">2-<\/span><span data-contrast=\"auto\">) itself consists of a central chromium atom (Cr) bonded to four oxygen atoms (O) through covalent bonds. The oxygen atoms share electrons with the chromium atom, forming covalent bonds within the chromate ion.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Therefore, the bonding in potassium chromate involves ionic bonding between the potassium ion and the chromate ion, as well as covalent bonding within the chromate ion itself.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">5: What is the use of potassium dichromate?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Answer: It is used in many applications as an oxidizing agent and is also used in the preparation of different products such as waxes, paints, glues, etc. Potassium dichromate is <\/span><span data-contrast=\"none\">carcinogenic and highly toxic as a compound of hexavalent chromium.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">6: What is the formula of potassium chromate?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:1,&quot;335559739&quot;:160,&quot;335559740&quot;:360}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">Answer: The formula of potassium chromate is K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">CrO<\/span><span data-contrast=\"none\">4<\/span><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">7: What is the difference between K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">CrO<\/span><span data-contrast=\"none\">4<\/span><span data-contrast=\"none\"> and K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">Cr<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">O<\/span><span data-contrast=\"none\">7<\/span><span data-contrast=\"none\">?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:1,&quot;335559739&quot;:160,&quot;335559740&quot;:360}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">Answer: The main difference between K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">CrO<\/span><span data-contrast=\"none\">4<\/span><span data-contrast=\"none\"> and K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">Cr<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">O<\/span><span data-contrast=\"none\">7<\/span><span data-contrast=\"none\"> is the number of oxygen atoms present in the compound. K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">CrO<\/span><span data-contrast=\"none\">4<\/span><span data-contrast=\"none\"> contains one chromium atom (Cr), two potassium atoms (K), and four oxygen atoms (O), whereas K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">Cr<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">O<\/span><span data-contrast=\"none\">7<\/span><span data-contrast=\"none\"> contains one chromium atom (Cr), two potassium atoms (K), and seven oxygen atoms (O). This means that K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">Cr<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">O<\/span><span data-contrast=\"none\">7<\/span><span data-contrast=\"none\"> has more oxygen atoms compared to K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">CrO<\/span><span data-contrast=\"none\">4<\/span><span data-contrast=\"none\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">8: What is the name of K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">Cr<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">O<\/span><span data-contrast=\"none\">7<\/span><span data-contrast=\"none\">?<\/span><span data-ccp-props=\"{&quot;201341983&quot;:1,&quot;335559739&quot;:160,&quot;335559740&quot;:360}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">Answer: The name of <\/span><span data-contrast=\"none\">K<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">Cr<\/span><span data-contrast=\"none\">2<\/span><span data-contrast=\"none\">O<\/span><span data-contrast=\"none\">7<\/span><span data-contrast=\"none\"> is potassium dichromate.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Potassium chromate is a chemical compound with the formula K2CrO4. Potassium chromate (K2CrO4) is a chemical compound that belongs to [&hellip;]<\/p>\n","protected":false},"author":53,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"K2CrO4 (Potassium Chromate)","_yoast_wpseo_title":"K2CrO4 (Potassium Chromate) - Structure, Properties, and Uses","_yoast_wpseo_metadesc":"Potassium chromate is an inorganic compound with the formula K2CrO4. A yellow crystalline solid is potassium chromate.","custom_permalink":""},"categories":[8458,8438],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>K2CrO4 (Potassium Chromate) - Structure, Properties, and Uses<\/title>\n<meta name=\"description\" content=\"Potassium chromate is an inorganic compound with the formula K2CrO4. 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