Question -
Answer -
In the presence of sulphuric acid (H2SO4),KI produces HI
Since
is an oxidizingagent, it oxidizes HI (produced in the reaction to I2).
As a result, the reaction between alcoholand HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is notused during the reaction of alcohols with KI. Instead, a non-oxidizing acidsuch as H3PO4 is used.