Which one of the following does not represent the Arrhenius equation?

An increase in the concentration of the reactants of a reaction leads to a change in:

In a reversible reaction,the catalyst

For the process $R \rightarrow P$, the energy of the reactant is $50 \ kJ$ and the energy of the transition state is $170 \ kJ$. Determine the activation energy $(E_a)$ for the forward reaction in $kJ$.

Which of the following graphs for $\ln k$ versus $\frac{1}{T}$ is correct?

The rate constant for a chemical reaction taking place at $500 \ K$ is expressed as $K = A \ e^{-1000}$. The activation energy of the reaction is: