Dependence of Rate on Temperature
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CHXII04:CHEMICAL KINETICS

320235 Figure shows a graph in \(\log _{10} \mathrm{k}\) vs \(\dfrac{1}{\mathrm{~T}}\) where \(\mathrm{k}\) is rate constant and \(\mathrm{T}\) is temperature. The straight line \(\mathrm{BC}\) has slope, \(\tan \theta=-\dfrac{1}{2.303}\) and an intercept of 5 on \({\text{y - axis}}\). Thus \(E_{a}\), the energy of activation is
supporting img

1 \(2.303 \times 2 \mathrm{cal}\)
2 \(\dfrac{2}{2.303} \mathrm{cal}\)
3 \(2 \mathrm{cal}\)
4 None of these
CHXII04:CHEMICAL KINETICS

320236 Which one of the following does not represent Arrhenius equation?

1 \({\mathrm{\log \mathrm{k}=\log \mathrm{A}-\dfrac{\mathrm{Ea}}{2.303 \mathrm{RT}}}}\)
2 \({\mathrm{\mathrm{k}=\mathrm{Ae}^{-\mathrm{Ea} / \mathrm{RT}}}}\)
3 \(\ln \,k\,{\rm{ = }} - \frac{{{\rm{Ea}}}}{{{\rm{RT}}}}{\rm{ + ln}}\,{\rm{A}}\)
4 \({\rm{k = A}}{{\rm{e}}^{{\rm{Ea/RT}}}}\)
KCET - 2024
CHXII04:CHEMICAL KINETICS

320237 The activation energy of a reaction is zero. Its rate constant at \(280 \mathrm{~K}\) is \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\), the rate constant at \(300 \mathrm{~K}\) is

1 \(3.2 \times 10^{-6} \mathrm{~s}^{-1}\)
2 zero
3 \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\)
4 \(1.6 \times 10^{-5} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320238 In the following graph.
supporting img

1 value of \(\frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303}}}}\)
2 value of \(\frac{{{\text{2}}{\text{.303}}}}{{{{\text{E}}_{\text{a}}}}}\)
3 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303R}}}}\)
4 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303RT}}}}\)
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CHXII04:CHEMICAL KINETICS

320235 Figure shows a graph in \(\log _{10} \mathrm{k}\) vs \(\dfrac{1}{\mathrm{~T}}\) where \(\mathrm{k}\) is rate constant and \(\mathrm{T}\) is temperature. The straight line \(\mathrm{BC}\) has slope, \(\tan \theta=-\dfrac{1}{2.303}\) and an intercept of 5 on \({\text{y - axis}}\). Thus \(E_{a}\), the energy of activation is
supporting img

1 \(2.303 \times 2 \mathrm{cal}\)
2 \(\dfrac{2}{2.303} \mathrm{cal}\)
3 \(2 \mathrm{cal}\)
4 None of these
CHXII04:CHEMICAL KINETICS

320236 Which one of the following does not represent Arrhenius equation?

1 \({\mathrm{\log \mathrm{k}=\log \mathrm{A}-\dfrac{\mathrm{Ea}}{2.303 \mathrm{RT}}}}\)
2 \({\mathrm{\mathrm{k}=\mathrm{Ae}^{-\mathrm{Ea} / \mathrm{RT}}}}\)
3 \(\ln \,k\,{\rm{ = }} - \frac{{{\rm{Ea}}}}{{{\rm{RT}}}}{\rm{ + ln}}\,{\rm{A}}\)
4 \({\rm{k = A}}{{\rm{e}}^{{\rm{Ea/RT}}}}\)
KCET - 2024
CHXII04:CHEMICAL KINETICS

320237 The activation energy of a reaction is zero. Its rate constant at \(280 \mathrm{~K}\) is \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\), the rate constant at \(300 \mathrm{~K}\) is

1 \(3.2 \times 10^{-6} \mathrm{~s}^{-1}\)
2 zero
3 \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\)
4 \(1.6 \times 10^{-5} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320238 In the following graph.
supporting img

1 value of \(\frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303}}}}\)
2 value of \(\frac{{{\text{2}}{\text{.303}}}}{{{{\text{E}}_{\text{a}}}}}\)
3 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303R}}}}\)
4 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303RT}}}}\)
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CHXII04:CHEMICAL KINETICS

320235 Figure shows a graph in \(\log _{10} \mathrm{k}\) vs \(\dfrac{1}{\mathrm{~T}}\) where \(\mathrm{k}\) is rate constant and \(\mathrm{T}\) is temperature. The straight line \(\mathrm{BC}\) has slope, \(\tan \theta=-\dfrac{1}{2.303}\) and an intercept of 5 on \({\text{y - axis}}\). Thus \(E_{a}\), the energy of activation is
supporting img

1 \(2.303 \times 2 \mathrm{cal}\)
2 \(\dfrac{2}{2.303} \mathrm{cal}\)
3 \(2 \mathrm{cal}\)
4 None of these
CHXII04:CHEMICAL KINETICS

320236 Which one of the following does not represent Arrhenius equation?

1 \({\mathrm{\log \mathrm{k}=\log \mathrm{A}-\dfrac{\mathrm{Ea}}{2.303 \mathrm{RT}}}}\)
2 \({\mathrm{\mathrm{k}=\mathrm{Ae}^{-\mathrm{Ea} / \mathrm{RT}}}}\)
3 \(\ln \,k\,{\rm{ = }} - \frac{{{\rm{Ea}}}}{{{\rm{RT}}}}{\rm{ + ln}}\,{\rm{A}}\)
4 \({\rm{k = A}}{{\rm{e}}^{{\rm{Ea/RT}}}}\)
KCET - 2024
CHXII04:CHEMICAL KINETICS

320237 The activation energy of a reaction is zero. Its rate constant at \(280 \mathrm{~K}\) is \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\), the rate constant at \(300 \mathrm{~K}\) is

1 \(3.2 \times 10^{-6} \mathrm{~s}^{-1}\)
2 zero
3 \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\)
4 \(1.6 \times 10^{-5} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320238 In the following graph.
supporting img

1 value of \(\frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303}}}}\)
2 value of \(\frac{{{\text{2}}{\text{.303}}}}{{{{\text{E}}_{\text{a}}}}}\)
3 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303R}}}}\)
4 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303RT}}}}\)
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CHXII04:CHEMICAL KINETICS

320235 Figure shows a graph in \(\log _{10} \mathrm{k}\) vs \(\dfrac{1}{\mathrm{~T}}\) where \(\mathrm{k}\) is rate constant and \(\mathrm{T}\) is temperature. The straight line \(\mathrm{BC}\) has slope, \(\tan \theta=-\dfrac{1}{2.303}\) and an intercept of 5 on \({\text{y - axis}}\). Thus \(E_{a}\), the energy of activation is
supporting img

1 \(2.303 \times 2 \mathrm{cal}\)
2 \(\dfrac{2}{2.303} \mathrm{cal}\)
3 \(2 \mathrm{cal}\)
4 None of these
CHXII04:CHEMICAL KINETICS

320236 Which one of the following does not represent Arrhenius equation?

1 \({\mathrm{\log \mathrm{k}=\log \mathrm{A}-\dfrac{\mathrm{Ea}}{2.303 \mathrm{RT}}}}\)
2 \({\mathrm{\mathrm{k}=\mathrm{Ae}^{-\mathrm{Ea} / \mathrm{RT}}}}\)
3 \(\ln \,k\,{\rm{ = }} - \frac{{{\rm{Ea}}}}{{{\rm{RT}}}}{\rm{ + ln}}\,{\rm{A}}\)
4 \({\rm{k = A}}{{\rm{e}}^{{\rm{Ea/RT}}}}\)
KCET - 2024
CHXII04:CHEMICAL KINETICS

320237 The activation energy of a reaction is zero. Its rate constant at \(280 \mathrm{~K}\) is \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\), the rate constant at \(300 \mathrm{~K}\) is

1 \(3.2 \times 10^{-6} \mathrm{~s}^{-1}\)
2 zero
3 \(1.6 \times 10^{-6} \mathrm{~s}^{-1}\)
4 \(1.6 \times 10^{-5} \mathrm{~s}^{-1}\)
CHXII04:CHEMICAL KINETICS

320238 In the following graph.
supporting img

1 value of \(\frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303}}}}\)
2 value of \(\frac{{{\text{2}}{\text{.303}}}}{{{{\text{E}}_{\text{a}}}}}\)
3 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303R}}}}\)
4 value of \( - \frac{{{{\text{E}}_{\text{a}}}}}{{{\text{2}}{\text{.303RT}}}}\)
For More Updates join with Us
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