{"id":412214,"date":"2023-01-12T02:47:24","date_gmt":"2023-01-11T21:17:24","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/question\/statement-i-higher-order-ionisation-constant-ka2ka3-are-smaller-than-the-lower-order-ionisation-constant-ka1-of-a-polyprotic-acid-statement-ii-it-is-more-difficult-to-remove-a-p\/"},"modified":"2025-06-19T20:01:39","modified_gmt":"2025-06-19T14:31:39","slug":"statement-i-higher-order-ionisation-constant-ka2ka3-are-smaller-than-the-lower-order-ionisation-constant-ka1-of-a-polyprotic-acid-statement-ii-it-is-more-difficult-to-remove-a-p","status":"publish","type":"questions","link":"https:\/\/infinitylearn.com\/surge\/question\/chemistry\/statement-i-higher-order-ionisation-constant-ka2ka3are\/","title":{"rendered":"Statement I:\u00a0 Higher order ionisation constant (Ka2,Ka3\u00a0are smaller than the lower order ionisation constant (Ka1) of a polyprotic acid.Statement II:\u00a0 It is more difficult to remove a positively charged proton from a negative ion due to electrostatic forces."},"content":{"rendered":"","protected":false},"author":1,"template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"Statement I:\u00a0 Higher order ionisation constant (Ka2,Ka3\u00a0are smaller than the lower order ionisation constant (Ka1) of a polyprotic acid.Statement II:\u00a0 It is more difficult to remove a positively charged proton from a negative ion due to electrostatic forces.","custom_permalink":"question\/chemistry\/statement-i-higher-order-ionisation-constant-ka2ka3are\/"},"categories":[],"acf":{"question":"<p><span><strong>Statement I:<\/strong><\/span><span>&nbsp;<\/span> Higher order ionisation constant (<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mfenced><mrow><msub><mi mathvariant=\"normal\">K<\/mi><msub><mi mathvariant=\"normal\">a<\/mi><mn>2<\/mn><\/msub><\/msub><mo>,<\/mo><msub><mi mathvariant=\"normal\">K<\/mi><msub><mi mathvariant=\"normal\">a<\/mi><mn>3<\/mn><\/msub><\/msub><\/mrow><\/mfenced><\/math>&nbsp;are smaller than the lower order ionisation constant (<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><msub><mi mathvariant=\"normal\">K<\/mi><msub><mi mathvariant=\"normal\">a<\/mi><mn>1<\/mn><\/msub><\/msub><\/math>) of a polyprotic acid.<br><span><strong>Statement II:&nbsp;<\/strong><\/span> It is more difficult to remove a positively charged proton from a negative ion due to electrostatic forces.<\/p>","options":[{"option":"<p>Both statements I and II are correct.<\/p>","correct":true},{"option":"<p>Statement I is incorrect and statement II is correct.<\/p>","correct":false},{"option":"<p>Statement I is correct and statement II is incorrect.<\/p>","correct":false},{"option":"<p>Both statements I and II are incorrect.<\/p>","correct":false}],"solution":"<p>Higher order ionization constants&nbsp;<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mfenced><mrow><msub><mi mathvariant=\"normal\">K<\/mi><msub><mi mathvariant=\"normal\">a<\/mi><mn>2<\/mn><\/msub><\/msub><mo>,<\/mo><msub><mi mathvariant=\"normal\">K<\/mi><msub><mi mathvariant=\"normal\">a<\/mi><mn>3<\/mn><\/msub><\/msub><\/mrow><\/mfenced><\/math>&nbsp;are smaller than the lower order ionization constans(<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><msub><mi mathvariant=\"normal\">K<\/mi><msub><mi mathvariant=\"normal\">a<\/mi><mn>1<\/mn><\/msub><\/msub><\/math>) of a polyprotic acid. The reason for this is that it is more difficult to remove a positively charged proton from a negative ion due to electrostatic forces.&nbsp;<\/p><p>This can be seen in the case of removing a proton from the uncharged&nbsp;<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><msub><mi mathvariant=\"normal\">H<\/mi><mn>2<\/mn><\/msub><msub><mi>CO<\/mi><mn>3<\/mn><\/msub><\/math>&nbsp;as compared from a negatively charged&nbsp;<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><msubsup><mi>HCO<\/mi><mn>3<\/mn><mo>-<\/mo><\/msubsup><\/math>.<br>Similarly, it is more difficult to remove a proton from a doubly charged&nbsp;<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><msubsup><mi>HPO<\/mi><mn>4<\/mn><mrow><mn>2<\/mn><mo>-<\/mo><\/mrow><\/msubsup><\/math>&nbsp;anion as compared to&nbsp;<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><msub><mi mathvariant=\"normal\">H<\/mi><mn>2<\/mn><\/msub><msubsup><mi>PO<\/mi><mn>4<\/mn><mo>-<\/mo><\/msubsup><\/math>.<\/p>","subject":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - 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