Chapter 14, Problem 77E

Consider this three-step mechanism for a reaction:
$\begin{array}{l}{\text{Cl}}_{\text{2}}\left(g\right)\underset{k_2}{\overset{k_1}{\rightleftharpoons }}\text{2Cl}\left(g\right)\text{ Fast}\\ \text{Cl}\left(g\right)+{\text{CHCl}}_3\left(g\right)\underset{k_3}{\to }HCl\left(g\right){\text{+CCl}}_3\left(g\right)\text{ Slow}\\ \text{Cl}\left(g\right)+{\text{CCl}}_3\left(g\right)\underset{k_4}{\to }{\text{CCl}}_4\text{ Fast}\end{array}$
a. What is the overall reaction?
b. Identify the intermediates in the mechanism.
c. What is the predicted rate law?