List of top Chemistry Questions on Chemical Kinetics asked in Maharashtra Class XII

The unit of rate constant is per second, the order of reaction is --

A chemical reaction occurs in two steps :
(i) \( NO_2Cl(g) \xrightarrow{\text{slow} NO_2(g) + Cl(g) }\)
(ii) \( NO_2Cl(g) + Cl(g) \xrightarrow{\text{fast}} NO_2(g) + Cl_2(g) \)
(a) Write down the rate law.
(b) Identify the reaction intermediate.

Define : Molecularity of reaction

The rate of A + B \(\rightarrow\) P is \(3.6 \times 10^{-2}\) mol/\(dm^3\)/s. When [A] = 0.2 M and [B] = 0.1 M. Calculate the rate constant if reaction is first order in B and second order in A.

Write unit of rate constant for second order reaction.