Which of the following units is used to express the rate of a reaction?

The instantaneous rate of disappearance of $MnO_4^-$ ion in the following reaction is $4.56 \times 10^{-3} \ Ms^{-1}$,$2MnO_4^- + 10I^{-} + 16H^{+} \to 2Mn^{2+} + 5I_2 + 8H_2O$. The rate of appearance of $I_2$ is

For the reaction $2N_2O_{5(g)} \to 4NO_{2(g)} + O_{2(g)}$,what is the ratio of the rate of decomposition of $N_2O_5$ to the rate of formation of $NO_2$?

In some cases,the reaction rate increases with time. This phenomenon is known as ..........

For the reaction $H_{2(g)} + I_{2(g)} \rightleftharpoons 2HI_{(g)}$,the rate of reaction is expressed as:

For the reaction $CH_3COOCH_3 + H_2O \xrightarrow{H^{+}} CH_3COOH + CH_3OH$,the progress of the reaction is followed by: