(i) What is a catalyst ? Write the chemical equation to represent the hydrogenation of ethene. (ii) Which of the following compounds belong to the same homologous series ? C_(2)H_(6), C_(2)H_(6)O_(2), C_(2)H_(6)O, C_(4)H_(10).

(i) What is a catalyst ? Write the chemical equation to represent the

1.	(i) What is a catalyst ? Write the chemical equation to represent the hydrogenation of ethene. (ii) Which of the following compounds belong to the same homologous series ? C_(2)H_(6), C_(2)H_(6)O_(2), C_(2)H_(6)O, C_(4)H_(10).
Answer» Solution :(i) Catalyst is a substance that cause a reaction to occur or PROCEED at a DIFFERENT rate without being affected itself. `CH_(2)=CH_(2)overset"Nickel catalyst"underset(H_(2))rightarrowCH_(3)-CH_(3)` `C_(2)H_(6)and C_(4)H_(10).`