Dependence of Rate on Concentration
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CHXII04:CHEMICAL KINETICS

320176 In the reversible reaction, \(2 \mathrm{NO}_{2} \underset{k_{2}}{\stackrel{k_{1}}{\rightleftharpoons}} \mathrm{N}_{2} \mathrm{O}_{4}\) the rate of disappearance of \(\mathrm{NO}_{2}\) is equal to

1 \(\frac{{2{{\text{k}}_1}}}{{{{\text{k}}_2}}}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2}\)
2 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - 2{{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
3 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - {{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
4 \(\left( {2{{\text{k}}_1} - {{\text{k}}_2}} \right)\left[ {{\text{N}}{{\text{O}}_2}} \right]\)
CHXII04:CHEMICAL KINETICS

320177 The reaction, \(\mathrm{N}_{2} \mathrm{O}_{5}\) in \(\mathrm{CCl}_{4}\) (solution) \(\longrightarrow\)
\({\rm{2N}}{{\rm{O}}_{\rm{2}}}{\rm{( solution )}} + \frac{1}{2}{{\rm{O}}_{\rm{2}}}{\rm{(g)}}\)
is of first order in \(\mathrm{N}_{2} \mathrm{O}_{5}\) with rate constant \(6.2 \times 10^{-4} \mathrm{~s}^{-1}\).
What is the value of rate of reaction when
\(\left[\mathrm{N}_{2} \mathrm{O}_{5}\right]=1.25 \mathrm{~mol} \mathrm{~L}^{-1}\) ?

1 \(5.15 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
2 \(6.35 \times 10^{-3} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
3 \(7.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
4 \(3.85 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320178 For the reaction system
\(2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{NO}_{2}(\mathrm{~g})\), volume is suddenly reduced to half of its value by increasing the pressure on it. If the reaction is of first order with respect to \(\mathrm{O}_{2}\) and second order with respect to \(\mathrm{NO,}\) then the rate of reaction will

1 Diminish to one - eight of its initial value
2 Increase to eight times of its initial value
3 Increase to four times of its initial value
4 Diminish to one fourth of its initial value
CHXII04:CHEMICAL KINETICS

320179 A drop of solution (volume \(0.06 \mathrm{~mL}\) ) contains \(3 \times 10^{-6}\) mole \(\mathrm{H}^{+}\) ions. If the rate of disappearance of the \(\mathrm{H}^{+}\) ions is \(1 \times {10^7}{\rm{mol}}\,\,{\rm{litr}}{{\rm{e}}^{ - 1}}{\rm{se}}{{\rm{c}}^{ - 1}},\) then time taken for \(\mathrm{H}^{+}\)ions in the drop to disappear is ____.

1 \(5 \times {10^{ - 3}}\sec \)
2 \(5 \times {10^{ - 1}}\sec \)
3 \(5 \times {10^{ - 9}}\sec \)
4 \(5 \times {10^{ - 6}}\sec \)
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CHXII04:CHEMICAL KINETICS

320176 In the reversible reaction, \(2 \mathrm{NO}_{2} \underset{k_{2}}{\stackrel{k_{1}}{\rightleftharpoons}} \mathrm{N}_{2} \mathrm{O}_{4}\) the rate of disappearance of \(\mathrm{NO}_{2}\) is equal to

1 \(\frac{{2{{\text{k}}_1}}}{{{{\text{k}}_2}}}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2}\)
2 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - 2{{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
3 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - {{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
4 \(\left( {2{{\text{k}}_1} - {{\text{k}}_2}} \right)\left[ {{\text{N}}{{\text{O}}_2}} \right]\)
CHXII04:CHEMICAL KINETICS

320177 The reaction, \(\mathrm{N}_{2} \mathrm{O}_{5}\) in \(\mathrm{CCl}_{4}\) (solution) \(\longrightarrow\)
\({\rm{2N}}{{\rm{O}}_{\rm{2}}}{\rm{( solution )}} + \frac{1}{2}{{\rm{O}}_{\rm{2}}}{\rm{(g)}}\)
is of first order in \(\mathrm{N}_{2} \mathrm{O}_{5}\) with rate constant \(6.2 \times 10^{-4} \mathrm{~s}^{-1}\).
What is the value of rate of reaction when
\(\left[\mathrm{N}_{2} \mathrm{O}_{5}\right]=1.25 \mathrm{~mol} \mathrm{~L}^{-1}\) ?

1 \(5.15 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
2 \(6.35 \times 10^{-3} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
3 \(7.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
4 \(3.85 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320178 For the reaction system
\(2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{NO}_{2}(\mathrm{~g})\), volume is suddenly reduced to half of its value by increasing the pressure on it. If the reaction is of first order with respect to \(\mathrm{O}_{2}\) and second order with respect to \(\mathrm{NO,}\) then the rate of reaction will

1 Diminish to one - eight of its initial value
2 Increase to eight times of its initial value
3 Increase to four times of its initial value
4 Diminish to one fourth of its initial value
CHXII04:CHEMICAL KINETICS

320179 A drop of solution (volume \(0.06 \mathrm{~mL}\) ) contains \(3 \times 10^{-6}\) mole \(\mathrm{H}^{+}\) ions. If the rate of disappearance of the \(\mathrm{H}^{+}\) ions is \(1 \times {10^7}{\rm{mol}}\,\,{\rm{litr}}{{\rm{e}}^{ - 1}}{\rm{se}}{{\rm{c}}^{ - 1}},\) then time taken for \(\mathrm{H}^{+}\)ions in the drop to disappear is ____.

1 \(5 \times {10^{ - 3}}\sec \)
2 \(5 \times {10^{ - 1}}\sec \)
3 \(5 \times {10^{ - 9}}\sec \)
4 \(5 \times {10^{ - 6}}\sec \)
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CHXII04:CHEMICAL KINETICS

320176 In the reversible reaction, \(2 \mathrm{NO}_{2} \underset{k_{2}}{\stackrel{k_{1}}{\rightleftharpoons}} \mathrm{N}_{2} \mathrm{O}_{4}\) the rate of disappearance of \(\mathrm{NO}_{2}\) is equal to

1 \(\frac{{2{{\text{k}}_1}}}{{{{\text{k}}_2}}}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2}\)
2 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - 2{{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
3 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - {{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
4 \(\left( {2{{\text{k}}_1} - {{\text{k}}_2}} \right)\left[ {{\text{N}}{{\text{O}}_2}} \right]\)
CHXII04:CHEMICAL KINETICS

320177 The reaction, \(\mathrm{N}_{2} \mathrm{O}_{5}\) in \(\mathrm{CCl}_{4}\) (solution) \(\longrightarrow\)
\({\rm{2N}}{{\rm{O}}_{\rm{2}}}{\rm{( solution )}} + \frac{1}{2}{{\rm{O}}_{\rm{2}}}{\rm{(g)}}\)
is of first order in \(\mathrm{N}_{2} \mathrm{O}_{5}\) with rate constant \(6.2 \times 10^{-4} \mathrm{~s}^{-1}\).
What is the value of rate of reaction when
\(\left[\mathrm{N}_{2} \mathrm{O}_{5}\right]=1.25 \mathrm{~mol} \mathrm{~L}^{-1}\) ?

1 \(5.15 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
2 \(6.35 \times 10^{-3} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
3 \(7.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
4 \(3.85 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320178 For the reaction system
\(2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{NO}_{2}(\mathrm{~g})\), volume is suddenly reduced to half of its value by increasing the pressure on it. If the reaction is of first order with respect to \(\mathrm{O}_{2}\) and second order with respect to \(\mathrm{NO,}\) then the rate of reaction will

1 Diminish to one - eight of its initial value
2 Increase to eight times of its initial value
3 Increase to four times of its initial value
4 Diminish to one fourth of its initial value
CHXII04:CHEMICAL KINETICS

320179 A drop of solution (volume \(0.06 \mathrm{~mL}\) ) contains \(3 \times 10^{-6}\) mole \(\mathrm{H}^{+}\) ions. If the rate of disappearance of the \(\mathrm{H}^{+}\) ions is \(1 \times {10^7}{\rm{mol}}\,\,{\rm{litr}}{{\rm{e}}^{ - 1}}{\rm{se}}{{\rm{c}}^{ - 1}},\) then time taken for \(\mathrm{H}^{+}\)ions in the drop to disappear is ____.

1 \(5 \times {10^{ - 3}}\sec \)
2 \(5 \times {10^{ - 1}}\sec \)
3 \(5 \times {10^{ - 9}}\sec \)
4 \(5 \times {10^{ - 6}}\sec \)
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CHXII04:CHEMICAL KINETICS

320176 In the reversible reaction, \(2 \mathrm{NO}_{2} \underset{k_{2}}{\stackrel{k_{1}}{\rightleftharpoons}} \mathrm{N}_{2} \mathrm{O}_{4}\) the rate of disappearance of \(\mathrm{NO}_{2}\) is equal to

1 \(\frac{{2{{\text{k}}_1}}}{{{{\text{k}}_2}}}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2}\)
2 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - 2{{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
3 \(2{{\text{k}}_1}{\left[ {{\text{N}}{{\text{O}}_2}} \right]^2} - {{\text{k}}_2}\left[ {\;{{\text{N}}_2}{{\text{O}}_4}} \right]\)
4 \(\left( {2{{\text{k}}_1} - {{\text{k}}_2}} \right)\left[ {{\text{N}}{{\text{O}}_2}} \right]\)
CHXII04:CHEMICAL KINETICS

320177 The reaction, \(\mathrm{N}_{2} \mathrm{O}_{5}\) in \(\mathrm{CCl}_{4}\) (solution) \(\longrightarrow\)
\({\rm{2N}}{{\rm{O}}_{\rm{2}}}{\rm{( solution )}} + \frac{1}{2}{{\rm{O}}_{\rm{2}}}{\rm{(g)}}\)
is of first order in \(\mathrm{N}_{2} \mathrm{O}_{5}\) with rate constant \(6.2 \times 10^{-4} \mathrm{~s}^{-1}\).
What is the value of rate of reaction when
\(\left[\mathrm{N}_{2} \mathrm{O}_{5}\right]=1.25 \mathrm{~mol} \mathrm{~L}^{-1}\) ?

1 \(5.15 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
2 \(6.35 \times 10^{-3} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
3 \(7.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
4 \(3.85 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320178 For the reaction system
\(2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{NO}_{2}(\mathrm{~g})\), volume is suddenly reduced to half of its value by increasing the pressure on it. If the reaction is of first order with respect to \(\mathrm{O}_{2}\) and second order with respect to \(\mathrm{NO,}\) then the rate of reaction will

1 Diminish to one - eight of its initial value
2 Increase to eight times of its initial value
3 Increase to four times of its initial value
4 Diminish to one fourth of its initial value
CHXII04:CHEMICAL KINETICS

320179 A drop of solution (volume \(0.06 \mathrm{~mL}\) ) contains \(3 \times 10^{-6}\) mole \(\mathrm{H}^{+}\) ions. If the rate of disappearance of the \(\mathrm{H}^{+}\) ions is \(1 \times {10^7}{\rm{mol}}\,\,{\rm{litr}}{{\rm{e}}^{ - 1}}{\rm{se}}{{\rm{c}}^{ - 1}},\) then time taken for \(\mathrm{H}^{+}\)ions in the drop to disappear is ____.

1 \(5 \times {10^{ - 3}}\sec \)
2 \(5 \times {10^{ - 1}}\sec \)
3 \(5 \times {10^{ - 9}}\sec \)
4 \(5 \times {10^{ - 6}}\sec \)
For More Updates join with Us