For the reaction,$3A + 2B \to C + D$,the differential rate law can be written as:

For the reaction $2 N_2O_{5(g)} \rightarrow 4 NO_{2(g)} + O_{2(g)}$,the initial concentration of $N_2O_5$ is $2.0 \ mol \ L^{-1}$ and after $300 \ min$,it is reduced to $1.4 \ mol \ L^{-1}$. The rate of production of $NO_2$ (in $mol \ L^{-1} \ min^{-1}$) is

For the reaction $2A + 3B \to 4C$,the rate of reaction may be represented as:

In a hydrogenation reaction at $27\,^oC$,it is observed that the hydrogen gas pressure falls from $2\,atm$ to $1.2\,atm$ in $50\,min$. Calculate the rate of disappearance of hydrogen.

An indicator '$X$' is used for studying the effect of variation in concentration of iodide on the rate of reaction of iodide ion with $H_2O_2$ at room temperature. The indicator '$X$' forms a blue-colored complex with compound '$A$' present in the solution. The indicator '$X$' and compound '$A$' respectively are:

$KClO_3 + 6FeSO_4 + 3H_2SO_4 \rightarrow KCl + 3Fe_2(SO_4)_3 + 3H_2O$. The above reaction was studied at $300 \ K$ by monitoring the concentration of $FeSO_4$,where the initial concentration was $10 \ M$ and after half an hour it became $8.8 \ M$. The rate of production of $Fe_2(SO_4)_3$ is $........ \times 10^{-6} \ mol \ L^{-1} \ s^{-1}$.