Exhibit 13-18 Consider the two-step mechanism below that has been proposed for the gas phase reaction of H 2 with ICl to produce I 2 and HCl to answer the following problem(s).
Step 1:
H 2 (g) + ICl (g)→HI (g) + HCl (g) (slow step)
Step 2:
HI (g) + ICl (g)→I 2 (g) + HCl (g) (fast step) Net reaction:
H 2 (g) + 2 ICl (g)→I 2 (g) + 2 HCl
-Refer to Exhibit 13-18. Assuming the mechanism above is consistent with experimental data, what is a reasonable rate law for the net overall reaction?

Question

Quizplus · Accepted Answer

The slow step is the rate-determining step, and it involves the collision between H₂ and ICl. Therefore, the rate of the overall reaction should depend on the concentration of both reactants, and the rate law should be Rate = k [H₂][ICl].

Exhibit 13-18 Consider the Two-Step Mechanism Below That Has Been