The rate constant of which of the following reactions is independent of the concentration of the reactants?

In the reaction $X \to Y$,if the concentration of reactant $X$ is increased by $1.5$ times,the rate of reaction increases by $1.837$ times. Determine the order of the reaction with respect to $X$.

The rate constant value for a reaction is $1.75 \times 10^2 \ L^2 \ mol^{-2} \ sec^{-1}$. The half-life period $t_{1/2} \propto$ . . . . . . .

What is the relationship between the half-life period $(t_{1/2})$ and the initial concentration $([R]_0)$ for a reaction of order $n$?

In the reaction $A + B \to \text{Products}$,if $B$ is taken in excess,then it is an example of

Which of the following statements is $NOT$ true for a reaction having rate law $r=k[H_2][I_2]$?