a. If we express the rate as the number of molecules react ing per unit time, for a unimol...

a. If we express the rate as the number of molecules react ing per unit time, for a unimolecular reaction the rate depends only on the number of reacting molecules present. For a bimolecular reaction, however, the rate depends on their concentrations. Explain,

b. Consider the simple reaction

It is proposed that the forward reaction (kl) is first order and the reverse reaction (k-1) is zero order. Is this possible? Explain.