Question

Give balanced equations when :
(a) ethene is burnt in excess of oxygen.
(b) ethene reacts with chlorine.
(c) ethene combines with hydrogen chloride.
(d) a mixture of ethene and hydrogen is passed over nickel at ${200}^{\circ }C$.

Answer 1

(a) $C_2{H}_4+3O_2⟶2C{O}_2+2H_{2}O+heat$

(b) $C{H}_2=C{H}_2+C{l}_2⟶\underset{\text{1,2-dichloroethane}}{\stackrel{Cl}{\stackrel{|}{C{H}_2}}-\stackrel{Cl}{\stackrel{|}{C{H}_2}}}$

(c) $C{H}_2=C{H}_2+HCl⟶\underset{\text{Ethyl chloride}}{C{H}_3-\stackrel{Cl}{\stackrel{|}{C{H}_2}}}$

(d) $C_2{H}_4+H_2\underset{{200}^{o}C}{\overset{Ni}{\to }}{C}_2{H}_6$