10.2 Why is sulphuric acid not used during the reaction of alcohols with KI?
10.2 Why is sulphuric acid not used during the reaction of alcohols with KI?
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In the presence of sulphuric acid (H2SO4), KI produces HI as follows : -
2KI + H2SO4 → 2KHSO4 + 2KI
Since H2SO4 is an oxidising agent, it oxidises HI (produced in the reaction to I2)
2HI + H2SO4 → I2 + SO2 +;
As a result, the reaction between an alcohol and HI to produce alkyl iodide cannot occur. There
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