Chemistry - Chemical Kinetics Question with Solution | TestHub

The reaction is described by:

$$H{g}_2^{2+}(aq)+T{l}^{3+}(aq)⟶2H{g}^{2+}(aq)+T{l}^{+}(aq)$$

One proposed mechanism for this reaction is:

(1) $H{g}_2^{2+}(aq)+T{l}^{3+}(aq)\underset{k_{-1}}{\stackrel{k_1}{\rightleftharpoons }}HgT{l}^{3+}(aq)+H{g}^{2+}(aq)$ (fast equilibrium)

(2) $HgT{l}^{3+}(aq)+H{g}^{2+}(aq)\stackrel{k_2}{\to }T{l}^{+}(aq)$ (slow)

Which of the following is/are correct according to the proposed mechanism?