Write balanced equations for the following reactions:
(a) Preparation of ethyne from ethylene dibromide.
(b) Preparation of ester using carboxylic acid.
(c) Conversion of alkyl halide to ethene.
(a)
(b) C2H5OHethyl alcohol+CH3COOHacetic acid→Conc. H2SO4CH3−COO−C2H5ethyl acetate+H2O\underset{\text{ethyl alcohol}}{\text{C}_2\text{H}_5\text{OH}} + \underset{\text{acetic acid}}{\text{CH}_3\text{COOH}} \xrightarrow{\text{Conc. H}_2\text{SO}_4} \underset{\text{ethyl acetate}}{\text{CH}_3-\text{COO}-\text{C}_2\text{H}_5} + \text{H}_2\text{O}ethyl alcoholC2H5OH+acetic acidCH3COOHConc. H2SO4ethyl acetateCH3−COO−C2H5+H2O
(c)
C2H5-Cl Chloroethane [ethyl chloride]+KOH [aq.] alcoholic KOH→boilC2H4 Ethene [ethylene]+KCl+H2O\underset{\text{ Chloroethane [ethyl chloride]}}{\text{C}_2\text{H}_5\text{-Cl}} + \underset{\text{ alcoholic KOH}}{\text{KOH [aq.]}} \xrightarrow{\text{boil}} \underset{\text{ Ethene [ethylene]} }{\text{C}_2\text{H}_4} + \text{KCl} +\text{H}_2\text{O} Chloroethane [ethyl chloride]C2H5-Cl+ alcoholic KOHKOH [aq.]boil Ethene [ethylene]C2H4+KCl+H2O
