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Questions 29 and 30 concern the reaction and mechanism below. The formation of NOBr, 2 NO(g) + Br2(gKinetics Chemistry Question

Question

Questions 29 and 30 concern the reaction and mechanism below.
The formation of NOBr,
2 NO(g) + Br2(g) → 2 NOBr(g),
is studied, and the following mechanism is proposed:
NO(g) + Br2(g) ⇌ NOBr2(g) fast, equilibrium
NO(g) + NOBr2(g) → 2 NOBr(g) slow
What rate law is predicted by this mechanism?

A.

Rate = k[NO][Br2]

B.

Rate = k[NO]^2[Br2]

✓ Correct
C.

Rate = k[NO][Br2]^2

D.

Rate = k[NO]^2

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