Please tell me the correct answer showing some details (10 points and 5 stars for the best)?

Question

Which of the following could not be units for reaction rate?

a. Sec^-1

b. g/mL

c.M/min

d.Celcius/hour

Answer 1

the answer is b because g\mL is density.

Answer 2

Units used in determining reaction rates: reciprocal time, concentration (mass/volume), moles/unit time, energy released or absorb/ unit time, and their like.

Reaction rates themselves require something changing / unit time; reciprocal seconds is "somewhat" deceiving as the "something" is "1".

Th only option without time is "b".

Answer 3

the answer would be B !  cos mass / volume measures density ... not reaction rate ^^