1.

RCI is hydrolysed to ROH slowly but the reaction is rapid if catalytic amount of KI is added to reaction mixture. Explain.

Answer»

Solution :`I^(-)` is a powerful NUCLEOPHILE which REACTS rapidly with RCI to form RI.
`KI to K^(+) +I^(-)`
`RCI + I^(-) to RI + Cl^(-)`
Iodide is a better leaving group than CHLORIDE and therefore, RI is hydrolysed rapidly to form ROH.
`RI + OH^(-) to ROH + I^(-)`
The `I^(-)` formed in the above reaction recycles and this explains the catalytic effect.


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