What are the units of the rate constant (k) for a second-order chemical reaction?
Answer and explanation
Correct answer: D. L / (mol * s)
Rate = k [A]^2. Units: (M / s) = k (M^2) => k = M^-1 s^-1 = L / (mol s). For 0th order it is Ms^-1; for 1st order it is s^-1; for 3rd order it is M^-2*s^-1.
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