Which of the following factors are responsible for the increase in the rate of a surface catalysed reaction?
(i) A catalyst provides proper orientation for the reactant molecules to react.
(ii) heat of adsorption of reactants on a catalyst helps reactant molecules to overcome activation energy.
(iii) The catalyst increases the activation energy of the reactio.

Options

A. (i) and (iii)
B. (i) and (ii)
C. (ii) and (iii)
D. (i),(ii) and (iii)

Answer

B

Explanation

The catalyst decreass the activation energy of the reaction and thus increases the rate of reaction.