Q.The rate constant for a reaction $2A + B \rightarrow C$ is $2.5 \times 10^{-5} \text{ s}^{-1}$. If the rate is $1.25 \times 10^{-5} \text{ mol L}^{-1} \text{ s}^{-1}$, the concentration of $A$ is (given order is 1 with respect to A and 0 with respect to B):