{"id":406898,"date":"2023-01-11T19:22:11","date_gmt":"2023-01-11T13:52:11","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/question\/a-ki-solution-containing-starch-turns-blue-on-the-addition-of-chlorine-which-of-the-following-statements-explain-this\/"},"modified":"2025-06-19T20:01:51","modified_gmt":"2025-06-19T14:31:51","slug":"a-ki-solution-containing-starch-turns-blue-on-the-addition-of-chlorine-which-of-the-following-statements-explain-this","status":"publish","type":"questions","link":"https:\/\/infinitylearn.com\/surge\/question\/chemistry\/a-ki-solution-containing-starch-turns-blue-on-the-addition-o\/","title":{"rendered":"A KI solution containing starch turns blue on the addition of chlorine. Which of the following statements explain this:"},"content":{"rendered":"","protected":false},"author":1,"template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"A KI solution containing starch turns blue on the addition of chlorine. Which of the following statements explain this:","custom_permalink":"question\/chemistry\/a-ki-solution-containing-starch-turns-blue-on-the-addition-o\/"},"categories":[],"acf":{"question":"<p>A KI solution containing starch turns blue on the addition of chlorine. Which of the following statements explain this:<\/p>","options":[{"option":"<p>The reduction potential of Cl<sub>2<\/sub> is more than that of I<sub>2<\/sub><\/p>","correct":true},{"option":"<p>The oxidation potential of Cl<sub>2<\/sub> is more than that of l<sub>2<\/sub>&nbsp;<\/p>","correct":false},{"option":"<p>The product formed when Cl<sub>2<\/sub> combines with starch is blue in colour.<\/p>","correct":false},{"option":"<p>The product formed when I<sub>2<\/sub> combines with starch is blue in colour.<\/p>","correct":false}],"solution":"<p>Chlorine is placed below iodine in electrochemical series, so Cl<sub>2<\/sub> undergoes reduction and I<sup>-<\/sup> undergoes oxidation.<\/p><p><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mn>2<\/mn><msup><mi mathvariant=\"normal\">I<\/mi><mo>-<\/mo><\/msup><mo>\u2192<\/mo><msub><mi mathvariant=\"normal\">I<\/mi><mn>2<\/mn><\/msub><mo>+<\/mo><mn>2<\/mn><msup><mi mathvariant=\"normal\">e<\/mi><mo>-<\/mo><\/msup><mspace linebreak=\"newline\">&nbsp;<\/mspace><msub><mi>Cl<\/mi><mn>2<\/mn><\/msub><mo>+<\/mo><mn>2<\/mn><msup><mi mathvariant=\"normal\">e<\/mi><mo>-<\/mo><\/msup><mo>\u2192<\/mo><mn>2<\/mn><msup><mi>Cl<\/mi><mo>-<\/mo><\/msup><mspace linebreak=\"newline\">&nbsp;<\/mspace><menclose notation=\"top\"><msub><mi>Cl<\/mi><mn>2<\/mn><\/msub><mo>+<\/mo><mn>2<\/mn><msup><mi mathvariant=\"normal\">I<\/mi><mo>-<\/mo><\/msup><mo>\u2192<\/mo><msub><mi mathvariant=\"normal\">I<\/mi><mn>2<\/mn><\/msub><mo>+<\/mo><mn>2<\/mn><msup><mi>Cl<\/mi><mo>-<\/mo><\/msup><\/menclose><\/math><\/p><p>So, iodine absorbed in reaction which changes the starch color changes to blue.<\/p>","subject":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A KI solution containing starch turns blue on the addition of chlorine. 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