Write the characteristics of a catalyst.

(N/A) $1$. $A$ small amount of the catalyst is sufficient to bring about a large change in the rate of reaction.
$2$. $A$ catalyst cannot initiate a reaction; it can only accelerate the rate of an existing reaction.
$3$. According to the Arrhenius equation,$k = Ae^{-E_a/RT}$,a catalyst lowers the activation energy $(E_a)$,which increases the rate of reaction.
$4$. $A$ catalyst does not alter the Gibbs free energy change $(\Delta G)$ of a reaction.
$5$. $A$ catalyst does not change the enthalpy change $(\Delta H)$ of a reaction.
$6$. $A$ catalyst participates in the reaction mechanism but is regenerated without any permanent chemical change at the end of the reaction.
$7$. $A$ catalyst does not change the equilibrium constant $(K_{eq})$ of a reaction. It helps in attaining equilibrium faster by catalyzing both the forward and backward reactions to the same extent.
$8$. The potential energy of reactants and products remains unchanged by the presence of a catalyst.