Dependence of Rate on Temperature
CHXII04:CHEMICAL KINETICS

320265 Reactant ' \({\text{A}}\) ' forms two products:
\({\text{A}}\xrightarrow{{{{\text{k}}_{\text{1}}}}}{\text{B,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{1}}}}}{\text{A}}\xrightarrow{{{{\text{k}}_{\text{2}}}}}{\text{C,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}\)
If \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}{\text{ = 2}}{{\text{E}}_{{{\text{a}}_{\text{1}}}}}\), then \({{\text{k}}_{\text{1}}}\,\,{\text{and}}\,\,{{\text{k}}_{\text{2}}}\) are related as:

1 \(k_{2}=k_{1} e^{E_{a_{1}} / R T}\)
2 \(k_{2}=k_{1} e^{E_{a_{2}} / R T}\)
3 \(k_{1}=A k_{2} e^{E_{q_{l}} / R T}\)
4 \(k_{1}=A k_{2} e^{E_{a 2} / R T}\)
CHXII04:CHEMICAL KINETICS

320266 The rate of reaction increases with rise in temperature because of

1 decrease in number of activated molecules
2 increase in energy of activation
3 decrease in energy of activation
4 increase in the number of effective collisions
CHXII04:CHEMICAL KINETICS

320267 According to Arrhenius hypothesis, rate of reaction increases with:

1 rise in temperature
2 decrease in temperature
3 rise in pressure
4 decrease in pressure
CHXII04:CHEMICAL KINETICS

320268 Which is a wrong statement?

1 Rate constant, \(\mathrm{k}=\) Arrhenius constant \(\mathrm{A}\) : if \(\mathrm{E}_{\mathrm{a}}=0\)
2 \(\mathrm{e}^{-\mathrm{E}_{\mathrm{a}} / R T}\) gives the fraction of reactant molecules that are activated at the given temperature
3 In k vs \(\dfrac{1}{\mathrm{~T}}\) plot is a straight line
4 presence of catalyst will not alter the value of \(E_{a}\)
CHXII04:CHEMICAL KINETICS

320265 Reactant ' \({\text{A}}\) ' forms two products:
\({\text{A}}\xrightarrow{{{{\text{k}}_{\text{1}}}}}{\text{B,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{1}}}}}{\text{A}}\xrightarrow{{{{\text{k}}_{\text{2}}}}}{\text{C,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}\)
If \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}{\text{ = 2}}{{\text{E}}_{{{\text{a}}_{\text{1}}}}}\), then \({{\text{k}}_{\text{1}}}\,\,{\text{and}}\,\,{{\text{k}}_{\text{2}}}\) are related as:

1 \(k_{2}=k_{1} e^{E_{a_{1}} / R T}\)
2 \(k_{2}=k_{1} e^{E_{a_{2}} / R T}\)
3 \(k_{1}=A k_{2} e^{E_{q_{l}} / R T}\)
4 \(k_{1}=A k_{2} e^{E_{a 2} / R T}\)
CHXII04:CHEMICAL KINETICS

320266 The rate of reaction increases with rise in temperature because of

1 decrease in number of activated molecules
2 increase in energy of activation
3 decrease in energy of activation
4 increase in the number of effective collisions
CHXII04:CHEMICAL KINETICS

320267 According to Arrhenius hypothesis, rate of reaction increases with:

1 rise in temperature
2 decrease in temperature
3 rise in pressure
4 decrease in pressure
CHXII04:CHEMICAL KINETICS

320268 Which is a wrong statement?

1 Rate constant, \(\mathrm{k}=\) Arrhenius constant \(\mathrm{A}\) : if \(\mathrm{E}_{\mathrm{a}}=0\)
2 \(\mathrm{e}^{-\mathrm{E}_{\mathrm{a}} / R T}\) gives the fraction of reactant molecules that are activated at the given temperature
3 In k vs \(\dfrac{1}{\mathrm{~T}}\) plot is a straight line
4 presence of catalyst will not alter the value of \(E_{a}\)
CHXII04:CHEMICAL KINETICS

320265 Reactant ' \({\text{A}}\) ' forms two products:
\({\text{A}}\xrightarrow{{{{\text{k}}_{\text{1}}}}}{\text{B,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{1}}}}}{\text{A}}\xrightarrow{{{{\text{k}}_{\text{2}}}}}{\text{C,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}\)
If \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}{\text{ = 2}}{{\text{E}}_{{{\text{a}}_{\text{1}}}}}\), then \({{\text{k}}_{\text{1}}}\,\,{\text{and}}\,\,{{\text{k}}_{\text{2}}}\) are related as:

1 \(k_{2}=k_{1} e^{E_{a_{1}} / R T}\)
2 \(k_{2}=k_{1} e^{E_{a_{2}} / R T}\)
3 \(k_{1}=A k_{2} e^{E_{q_{l}} / R T}\)
4 \(k_{1}=A k_{2} e^{E_{a 2} / R T}\)
CHXII04:CHEMICAL KINETICS

320266 The rate of reaction increases with rise in temperature because of

1 decrease in number of activated molecules
2 increase in energy of activation
3 decrease in energy of activation
4 increase in the number of effective collisions
CHXII04:CHEMICAL KINETICS

320267 According to Arrhenius hypothesis, rate of reaction increases with:

1 rise in temperature
2 decrease in temperature
3 rise in pressure
4 decrease in pressure
CHXII04:CHEMICAL KINETICS

320268 Which is a wrong statement?

1 Rate constant, \(\mathrm{k}=\) Arrhenius constant \(\mathrm{A}\) : if \(\mathrm{E}_{\mathrm{a}}=0\)
2 \(\mathrm{e}^{-\mathrm{E}_{\mathrm{a}} / R T}\) gives the fraction of reactant molecules that are activated at the given temperature
3 In k vs \(\dfrac{1}{\mathrm{~T}}\) plot is a straight line
4 presence of catalyst will not alter the value of \(E_{a}\)
CHXII04:CHEMICAL KINETICS

320265 Reactant ' \({\text{A}}\) ' forms two products:
\({\text{A}}\xrightarrow{{{{\text{k}}_{\text{1}}}}}{\text{B,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{1}}}}}{\text{A}}\xrightarrow{{{{\text{k}}_{\text{2}}}}}{\text{C,}}\) Activation energy \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}\)
If \({{\text{E}}_{{{\text{a}}_{\text{2}}}}}{\text{ = 2}}{{\text{E}}_{{{\text{a}}_{\text{1}}}}}\), then \({{\text{k}}_{\text{1}}}\,\,{\text{and}}\,\,{{\text{k}}_{\text{2}}}\) are related as:

1 \(k_{2}=k_{1} e^{E_{a_{1}} / R T}\)
2 \(k_{2}=k_{1} e^{E_{a_{2}} / R T}\)
3 \(k_{1}=A k_{2} e^{E_{q_{l}} / R T}\)
4 \(k_{1}=A k_{2} e^{E_{a 2} / R T}\)
CHXII04:CHEMICAL KINETICS

320266 The rate of reaction increases with rise in temperature because of

1 decrease in number of activated molecules
2 increase in energy of activation
3 decrease in energy of activation
4 increase in the number of effective collisions
CHXII04:CHEMICAL KINETICS

320267 According to Arrhenius hypothesis, rate of reaction increases with:

1 rise in temperature
2 decrease in temperature
3 rise in pressure
4 decrease in pressure
CHXII04:CHEMICAL KINETICS

320268 Which is a wrong statement?

1 Rate constant, \(\mathrm{k}=\) Arrhenius constant \(\mathrm{A}\) : if \(\mathrm{E}_{\mathrm{a}}=0\)
2 \(\mathrm{e}^{-\mathrm{E}_{\mathrm{a}} / R T}\) gives the fraction of reactant molecules that are activated at the given temperature
3 In k vs \(\dfrac{1}{\mathrm{~T}}\) plot is a straight line
4 presence of catalyst will not alter the value of \(E_{a}\)
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