Which of the following statements is true about the reaction 2 A → B + C which is first order in A and first order overall?

Question

Quizplus · Accepted Answer

Since the reaction is first-order in A, the rate of reaction is directly proportional to the concentration of A. Therefore, if the initial concentration of A is doubled, the initial rate of the reaction will also double. This statement is consistent with option E. The other options are not correct:

A) The rate constant for the reaction is not affected by the concentrations of the products, so the rate of reaction will not decrease at higher concentrations of B and C.

B) The time required for one half of A to react is independent of the concentration of A, so it is not directly proportional to the quantity of A.

C) The stoichiometric coefficients in the balanced equation do not determine the relative rates of reaction or formation.

D) The rate of formation of B is not necessarily equal to the rate of reaction of A, unless the reaction is balanced in a particular way that would lead to this relationship.

Which of the Following Statements Is True About the Reaction