Reaction 1 has the rate law rate=k1[C]; Reaction 2 has the rate law rate=k2[D]2[E]. Which statement about the units of the two rate constants is most accurate?
a) Both k1 and k2 have units Ms−1.
b) k1 has units s−1, whereas k2 has units M−2s−1.
c) k1 has units M−1s−1, whereas k2 has units s−1.
d) k1 has units s−1, whereas k2 has units M−1s−1.