Arrange CH3F, CHI, CH3Br and CH3Cl in order of their reactivity in nucleophilic substitution reaction.
Starting from ethyl bromide, how will you get (i) ethanol (ii) ethylene.
i) When ethyl bromide react with aq. KOH it forms ethanol.
CH3 -CH2 -Br + KOH (aq.) ---> CH3 -CH2 -OH
ii) When ethyl bromide react with alc. KOH it forms ethylene.
CH3 -CH2 -Br +KOH (alc.) ---> CH2 =CH2