Iodoform is obtained by the reaction of acetone with hypoiodite but not with iodide I on. Explain.
(b) Optically active 2-iodobutane on treatment with Nal in acetone gives a product which does not show optical activity. Why?

Explanation

(a) To prepare iodoform from acetione. I* ion is required which is furnished by IO but not by I as shown below

(b) Optically active 2-iodobutane on treatment with Nal in acetone undergoes racemization and hence the product does not show optical activity.