The elementary steps for the gas-phase reaction 2 NO(g) + Br₂(g) → 2 NOBr(g) are…
CHEMISTRY · Single correct · AP · Chemistry · Kinetics · Kinetics
Problem
The elementary steps for the gas-phase reaction 2 NO(g) + Br₂(g) → 2 NOBr(g) are proposed to be
(1) NO(g) + Br₂(g) ⇌ NOBr₂(g) (fast)
(2) NOBr₂(g) + NO(g) → 2 NOBr(g) (slow)
Which of the following rate laws is most consistent with this mechanism?
(a) rate = k[NO][Br₂]
(b) rate = k[NO]²[Br₂]
(c) rate = k[NOBr₂][NO]
(d) rate = k[NO]²[Br₂]²