Write equation of ethyl bromide with :

(a) aqueous NaOH

(b) alcoholic NaOH

(a) ${\text{C}$2\text{H}5\text{Br}} +\underset{\text{aqueous}} {\text{NaOH}} \xrightarrow{\text{boil}} \underset{\text{ Ethanol [ethyl alcohol]} }{\text{C}2\text{H}5\text{OH}} + \text{NaBr}

(b)

${\text{C}$2\text{H}5\text{Br}} + \underset{\text{ alcoholic NaOH}}{\text{NaOH}} \xrightarrow{\text{boil}} \underset{\text{ Ethene [ethylene]} }{\text{C}2\text{H}4} + \text{NaBr} +\text{H}_2\text{O}