Give balanced chemical equations for the following:

(a) Laboratory Preparation of Ethylene.

(b) Preparation of Ethanol by hydrolysis of alkyl halide.

(c) Ethene reacting with bromine.

(a) $\underset{\text{ ethyl alcohol}}{\text{C}$2\text{H}5\text{OH}} \xrightarrow[170\degree\text{C}]{\text{Conc. H}2\text{SO}4\text{[excess]}} \underset{ \text{ethylene}}{\text{C}2\text{H}4} + \text{H}_2\text{O}\

(b)

$\underset{\text{ Bromoethane [ethyl bromide]}}{\text{C}$2\text{H}5\text{Br}} + \underset{\text{ aqueous}}{\text{NaOH}} \xrightarrow{\text{boil}} \underset{ \text{ethanol}} {\text{C}2\text{H}5\text{OH}} + \text{NaBr}

(c) $\underset{\text{ ethene}}{\text{C}$2\text{H}4} + \text{Br}2 \xrightarrow[\text{[inert solvent]}]{\text{CCl}4} \underset{\text{1,2-dibromooethane [ethylene bromide]}}{\text{C}2\text{H}4\text{Br}_2}