If the order of the reaction $x + y \xrightarrow{hv} xy$ is zero,it means that the rate of

Why is the hydrolysis of an ester slow at the beginning and fast after some time?

Which of the following is a bimolecular reaction?

$A$ reaction $2A + B \xrightarrow{k} C + D$ is first order with respect to $A$ and second order with respect to $B$. Initial concentration $(t = 0)$ of $A$ is $C_0$ while $B$ is $2C_0$. If at $t = 30 \min$ the concentration of $C$ is $C_0/4$,then the rate expression at $t = 30 \min$ is:

For a reaction $X + Y \to Z$,the rate is given by $\text{rate} \propto [X]$. What are $(i)$ the molecularity and $(ii)$ the order of the reaction?

The unit of rate constant $K$ for a third-order reaction is . . . . . . .