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
(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 reaction
(IV) Adsorption increases the local concentration of reactant molecules on the surface of the catalyst.
Select the correct answer using the codes given below:

Which of the following factors are respsonsible for the increase in the rate of a surface catalysed reaction? I. A catalyst provides proper orientation for the reactant molecuels 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 reaction. IV. Adsorption increases the local concentration of reactant molecules on the surface of the catalyst. Select the correct answer using the codes given below:

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.

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.

A poistive catalyst increases the activation energy of the reaction.

A poistive catalyst increases the activation energy of the reaction.

Why rate of reaction increases when the concentration of reactant molecules is increased ?

Assertion: A catalyst increases the rate of a reaction. Reason: In presence of a catalyst, the activation energy of the reaction decreases.