Question

Which of these statements is not true about chemical reaction rates?

A. The reaction rates can change.
B. The reaction rates can increase.
C. The reaction rates can decrease.
D. The reaction rates are always constant.

Answer 1

D. The reaction rates are always constant.

Answer 2

It's the reaction rates are always constant because all chemical reactions occur at different rates but individual reaction rates are always constant rather than indecisive.