What is the action of the following on isopropyl methyl ether ?
(a) cold HI (b) hot HI

Explanation

(a) `underset("Isopropylmethyl ether")(CH_(3)-overset(CH_(3))overset(|)(CH)-O-CH_(3))+HIoverset("cold")rarr underset("Isopropyl alcohol")(CH_(3)-overset(CH_(3))overset(|)(CH)-OH)+underset("Methyl iodide")(CH_(3)I)`
(b) `underset("Isopropylmethyl ether")(CH_(3)-overset(CH_(3))overset(|)(CH)-O-CH_(3))+2HI overset("hot")rarr underset("Isopropyl iodide")((CH_(3))_(2)CHI)+CH_(3)I+H_(2)O`