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) C2H5OH ethyl alcohol→170°CConc. H2SO4[excess]C2H4ethylene+H2O \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}\ ethyl alcoholC2H5OHConc. H2SO4[excess]170°CethyleneC2H4+H2O
(b)
C2H5Br Bromoethane [ethyl bromide]+NaOH aqueous→boilC2H5OHethanol+NaBr\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} Bromoethane [ethyl bromide]C2H5Br+ aqueousNaOHboilethanolC2H5OH+NaBr
(c) C2H4 ethene+Br2→[inert solvent]CCl4C2H4Br21,2-dibromooethane [ethylene bromide]\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} etheneC2H4+Br2CCl4[inert solvent]1,2-dibromooethane [ethylene bromide]C2H4Br2
