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.

[4 MARKS]

Answer 1

Each Part: 1 Mark

(a) $\underset{Ethene}{C_2{H}_4}+3O_2\to 2C{O}_2+2H_{2}O$
(b) $\underset{Ethene}{C{H}_2=C{H}_2+Cl-Cl}\to \underset{1,2-Dichloroethane}{Cl-C{H}_2-C{H}_2-Cl}$
(c) $\underset{Ethene}{C{H}_2=C{H}_2}HCl\to \underset{Ethylchloride}{C{H}_3-C{H}_2-Cl}$
(d) $\underset{Ethene}{C{H}_2=C{H}_2}+H_2\underset{{200}^{\circ }C}{\overset{Ni}{\to }}\underset{Ethane}{C{H}_3-C{H}_3}$