题目
题目
单项选择题

Nitrogen dioxide decomposes via the following reaction, NO2(g) → NO(g) + 1/2O2(g) The experimental rate law is rate = k[NO2]2. At a specific temperature the rate of reaction was found to be 7.50 x 10-4 mol L-1 s-1. Which unit below is the correct unit for the rate constant in this case?

选项
A.a. mol2 L-2 s-1
B.b. mol-2 L2 s-1
C.c. mol-1 L s-1
D.d. mol L-1 s-1
E.e. s-1
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思路分析
The question provides the rate law for the decomposition NO2(g) → NO(g) + 1/2 O2(g) as rate = k[NO2]^2 and asks for the correct units of the rate constant k. Option a: a. mol2 L-2 s-1. This would correspond to a rate law with [NO2] in units of mol L-1 raised to the first power (i.e., rate ∝ [NO2]), or something inconsistent with a second-order dependence. Since the rate l......Login to view full explanation

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