For a chemical reaction $A \rightarrow B$, it is found that the rate of the reaction quadruples when

Question

For a chemical reaction $A \rightarrow B$, it is found that the rate of the reaction quadruples when the concentration of $A$ is doubled. The rate expression for the reaction is, rate $=\mathrm{k}[A]^n$ where the value of $n$ is

Professor PC Thomas Classes · Answer

Rate $\propto [A]^n$. Since $4 = (2)^n$, $n=2$.