Which is not a characteristic of a catalyst?

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(A) catalyst does not change the equilibrium constant because it affects both the forward and backward reaction rates to the same extent.It provides a

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It changes the equilibrium constant.

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(A) catalyst does not change the equilibrium constant because it affects both the forward and backward reaction rates to the same extent.It provides an alternative reaction pathway with a lower activation energy,which increases the rate of reaction.It does not increase the average kinetic energy $(K.E.)$ of the molecules.Therefore,both $A$ and $D$ are not characteristics of a catalyst,but in the context of standard multiple-choice questions,$A$ is the most fundamental thermodynamic property that remains unchanged.

List-$I$	List-$II$
$A$. $4NH_{3(g)} + 5O_{2(g)} \rightarrow 4NO_{(g)} + 6H_2O_{(g)}$	$I$. $NO_{(g)}$
$B$. $N_{2(g)} + 3H_{2(g)} \rightarrow 2NH_{3(g)}$	$II$. $H_2SO_{4(l)}$
$C$. $C_{12}H_{22}O_{11(aq)} + H_2O_{(l)} \rightarrow C_6H_{12}O_6 + C_6H_{12}O_6$	$III$. $Pt_{(s)}$
$D$. $2SO_{2(g)} + O_{2(g)} \rightarrow 2SO_{3(g)}$	$IV$. $Fe_{(s)}$

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