Question

Give chemical equation for:
(a) The laboratory preparation of methane from sodium acetate.
(b) The reaction of one mole of ethene with one mole of chlorine gas.
(c) The preparation of ethyne from 1, 2-dibromoethane.

Answer 1

(a) $\underset{\mathrm{Sodium}\mathrm{acetate}}{{\mathrm{CH}}_3\mathrm{COONa}}+\mathrm{NaOH}\underset{\mathrm{CaO}}{\overset{∆}{\to }}\underset{\mathrm{Methane}}{{\mathrm{CH}}_4}+{\mathrm{Na}}_2{\mathrm{CO}}_3$

(b) $\underset{\mathrm{Ethene}}{{\mathrm{C}}_2{\mathrm{H}}_4}+{\mathrm{Cl}}_2\stackrel{{\mathrm{CCl}}_4}{\to }\underset{1,2-\mathrm{Dichloroethane}}{{\mathrm{C}}_2{\mathrm{H}}_4{\mathrm{Cl}}_2}$

(c) $\underset{1,2-\mathrm{Dibromoethane}}{{\mathrm{C}}_2{\mathrm{H}}_4{\mathrm{Br}}_2}+\underset{\mathrm{alcoholic}}{2\mathrm{KOH}}\to \underset{\mathrm{Ethyne}}{{\mathrm{C}}_2{\mathrm{H}}_2}+2\mathrm{KBr}+2{\mathrm{H}}_2\mathrm{O}$