AP Chemistrymediummcq1 pt
What are the units of k for a first-order reaction?
A.s⁻¹
B.M·s⁻¹
C.M⁻¹·s⁻¹
D.M²·s⁻¹
Explanation
Core Concept
First order: rate (M/s) = k × [A] (M), so k carries s⁻¹. In general k's units are M^(1−overall order) per second.
Correct Answer
As⁻¹
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