Maharashtra Board Solutions for Chapter: Chemical Kinetics, Exercise 5: Exercises

Slope of the graph $\ln [\mathrm{A}{]}_{\mathrm{t}}$ versus $\mathrm{t}$ for first order reaction is

What is the half life of a first order reaction if time required to decrease concentration of reactant from $0.8 \mathrm{M}$ to $0.2 \mathrm{M}$ is $12 \mathrm{h}$?

The reaction, $3{\mathrm{ClO}}^{\ominus }\to {\mathrm{ClO}}_3^{\ominus }+2{\mathrm{Cl}}^{\ominus }$ occurs in two steps,
(i) $2{\mathrm{ClO}}^{-}⟶{\mathrm{ClO}}_2^{\ominus }$

(ii) ${\mathrm{ClO}}_2^{\ominus }+{\mathrm{ClO}}^{\ominus }⟶{\mathrm{ClO}}_3^{\ominus }+{\mathrm{Cl}}^{\ominus }$

The reaction intermediate is

The elementary reaction ${\mathrm{O}}_3( \mathrm{g})+\mathrm{O}\left(\mathrm{g}\right)⟶2{\mathrm{O}}_2( \mathrm{g})$ is

Rate law for the reaction, $2\mathrm{NO}+{\mathrm{Cl}}_2⟶2\mathrm{NOCl}$ is rate $=\mathrm{k}{\left[{\mathrm{NO}}_2\right]}^2\left[{\mathrm{Cl}}_2\right]$. Thus $\mathrm{k}$ would increase with

For an endothermic reaction, $\mathrm{X}\leftrightharpoons \mathrm{Y}$. If ${\mathrm{E}}_{\mathrm{f}}$ is activation energy of the forward reaction and ${\mathrm{E}}_{\mathrm{r}}$ that for reverse reaction, which of the following is correct?

For the reaction,

${\mathrm{CH}}_3\mathrm{Br}\left(\mathrm{aq}\right)+{\mathrm{OH}}^{-}\left(\mathrm{aq}\right)⟶{\mathrm{CH}}_3{\mathrm{OH}}^{\ominus }\left(\mathrm{aq}\right)+{\mathrm{Br}}^{\ominus }\left(\mathrm{aq}\right)$, rate law is rate $=\mathrm{k}\left[{\mathrm{CH}}_3\mathrm{Br}\right]\left[{\mathrm{OH}}^{\ominus }\right]$

What is change in rate if concentrations of both reactants are doubled?

How will you determine activation energy from rate constants at two different temperatures?