Which one of the following statements is inco | vedclass

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(D) catalyst is a substance that increases the rate of a reaction by providing an alternative pathway with a lower activation energy $(E_a)$.In hetero

Vedclass · Accepted Answer

There is no change in the energy of activation

Vedclass · Answer

(D) catalyst is a substance that increases the rate of a reaction by providing an alternative pathway with a lower activation energy $(E_a)$.In heterogeneous catalysis,the reactants and the catalyst are in different phases,and the reaction occurs on the surface of the catalyst.Statement $A$ is correct because catalysts lower the activation energy.Statement $B$ is correct as the catalyst often forms intermediate surface compounds with the reactants.Statement $C$ is correct because the adsorption of reactants on the catalyst surface is a key step.Statement $D$ is incorrect because the primary function of any catalyst is to change (specifically lower) the activation energy of the reaction.

List-$I$ (Reaction)	List-$II$ (Catalyst)
$A$. Hydrogenation of vegetable oils	$I$. $Ni$
$B$. Decomposition of potassium chlorate	$II$. $MnO_2$
$C$. Oxidation of $SO_2$ in lead chamber process	$III$. $Pt$
$D$. Oxidation of ammonia in Ostwald's process	$IV$. $NO_{(g)}$

Which one of the following statements is incorrect in the case of heterogeneous catalysis?

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