Average and Instantaneous Rate — MCQ Practice

For the reaction $2A(g) + B(g) \rightarrow 3C(g)$, if the concentration of A decreases from $0.5,\text{M}$ to $0.3,\text{M}$ in $10,\text{minutes}$, what is the average rate of formation of C during this interval?

Which of the following statements is TRUE regarding the instantaneous rate of a chemical reaction?

For the decomposition of $N_2O_5$ in $CCl_4$ at $320,\text{K}$: $2N_2O_5(g) \rightarrow 4NO_2(g) + O_2(g)$ If the rate of disappearance of $N_2O_5$ at a particular instant is $2.5 \times 10^{-4},\text{M s}^{-1}$, what is the rate of formation of $O_2$ at the same instant?

Consider the reaction $PCl_5(g) \rightarrow PCl_3(g) + Cl_2(g)$. If the concentration of $PCl_5$ changes from $1.2,\text{M}$ to $0.7,\text{M}$ in $25,\text{seconds}$, what is the average rate of the reaction in $\text{M s}^{-1}$?

The concentration of a reactant 'X' in a reaction $X \rightarrow Y$ is plotted against time, yielding a curve. To find the instantaneous rate of reaction at $t=30,\text{s}$, what should be done?

For the reaction $A(g) + 2B(g) \rightarrow C(g)$, if the initial rate of disappearance of A is $0.04,\text{M s}^{-1}$, what is the initial rate of disappearance of B?