Why is sulphuric acid not used during the reaction of alcohol with ki

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Question 10.2: Why is sulphuric acid not used during the reaction of alcohols with KI? Answer In the presence of sulphuric acid ( H 2 ​ SO 4 ​ ) , KI produces HI 2 KI + H 2 ​ SO 4 ​ ⟶ 2 KHSO 4 ​ + 2 HI Since H 2 ​ SO 4 ​ is an oxidizing agent, it oxidizes HI (produced in 2 HI + H 2 ​ SO 4 ​ ⟶ I 2 ​ + SO 2 ​ + H 2 ​ O the reaction to I 2 ​ . As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI. Instead, a non-oxidizing acid such as H 3 ​ PO 4 ​ is used. Question 10.2: Why is sulphuric acid not used during the reaction of alcohols with KI? Answer In the presence of sulphuric acid ( H 2 ​ SO 4 ​ ) , KI produces HI 2 KI + H 2 ​ SO 4 ​ ⟶ 2 KHSO 4 ​ + 2 HI Since H 2 ​ SO 4 ​ is an oxidizing agent, it oxidizes HI (produced in 2 HI + H 2 ​ SO 4 ​ ⟶ I 2 ​ + SO 2 ​ + H 2 ​ O the reaction to I 2 ​ . As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI. Instead, a non-oxidizing acid such as H 3 ​ PO 4 ​ is used. Updated On Feb 8, 2023 Topic Alkyl Halide Subject Chemistry Class Class 12 Passed Answer Type Video solution: 1 Upvotes 51 Avg. Video Duration 1 min