Which of the following statements is true?
A)Fast reactions have small rate constants.
B)Slow reactions have large rate constants.
C)A rate equation contains concentration terms for all reactants involved in a one-step mechanism.
D)A rate equation contains concentration terms for all the reactants involved in a multi-step reaction.

Question

Quizplus · Accepted Answer

A rate equation only contains concentration terms for the reactants involved in the rate-determining step of a reaction. For a one-step mechanism, this would include all the reactants, while for a multi-step reaction, it would only include the reactants involved in the slowest step (i.e. the rate-determining step). Thus, option C is the correct statement while options A and B are false. Option D is partially true but not a complete explanation.

Which of the Following Statements Is True