Integrated Rate Equations
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CHXII04:CHEMICAL KINETICS

320317 A radioactive isotope having a half-life period of 3 days was received after 12 days. If \(3 \mathrm{~g}\) of the isotope is left in the container, what would be the initial mass of the isotope?

1 \(12 \mathrm{~g}\)
2 \({\text{36 g}}\)
3 \(48 \mathrm{~g}\)
4 \(24 \mathrm{~g}\)
JEE - 2013
CHXII04:CHEMICAL KINETICS

320318 If \(60 \%\) of a first-order reaction was completed in \(60 \mathrm{~min}, 50 \%\) of the same reaction would be completed in approximately

1 \(40 \mathrm{~min}\)
2 \(50 \mathrm{~min}\)
3 \(45 \mathrm{~min}\)
4 \(60 \mathrm{~min}\)
KCET - 2010
CHXII04:CHEMICAL KINETICS

320319 Which of the following statement is not correct?

1 In zero order reaction, the rate of reaction remains constant throughout.
2 A second order reaction would become a pseudo first order reaction, when one of the reactants is taken in large excess.
3 The units of first order rate constant depends on the units of the concentration terms used.
4 In the first order reaction, the plot of \(\log\) (a-x) v/s time follows straight ine equation
CHXII04:CHEMICAL KINETICS

320320 Naturally occuring potassium consist of \({\mathrm{0.01 \%}}\) of \({\mathrm{{ }^{40} \mathrm{~K}}}\) which has half life of \({\mathrm{1.28 \times 10^{9}}}\) years. Calculate the activity of 1.00 g sample of KCl .

1 \(4.37 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
2 \(1.28 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
3 \(4.37 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
4 \(1.28 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
CHXII04:CHEMICAL KINETICS

320321 Which of the following represents the expression for \(\dfrac{3}{4}^{\text {th }}\) life of a first order reaction?

1 \(\frac{{\rm{k}}}{{{\rm{2}}{\rm{.303}}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
2 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
3 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log4}}\)
4 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log3}}\)
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CHXII04:CHEMICAL KINETICS

320317 A radioactive isotope having a half-life period of 3 days was received after 12 days. If \(3 \mathrm{~g}\) of the isotope is left in the container, what would be the initial mass of the isotope?

1 \(12 \mathrm{~g}\)
2 \({\text{36 g}}\)
3 \(48 \mathrm{~g}\)
4 \(24 \mathrm{~g}\)
JEE - 2013
CHXII04:CHEMICAL KINETICS

320318 If \(60 \%\) of a first-order reaction was completed in \(60 \mathrm{~min}, 50 \%\) of the same reaction would be completed in approximately

1 \(40 \mathrm{~min}\)
2 \(50 \mathrm{~min}\)
3 \(45 \mathrm{~min}\)
4 \(60 \mathrm{~min}\)
KCET - 2010
CHXII04:CHEMICAL KINETICS

320319 Which of the following statement is not correct?

1 In zero order reaction, the rate of reaction remains constant throughout.
2 A second order reaction would become a pseudo first order reaction, when one of the reactants is taken in large excess.
3 The units of first order rate constant depends on the units of the concentration terms used.
4 In the first order reaction, the plot of \(\log\) (a-x) v/s time follows straight ine equation
CHXII04:CHEMICAL KINETICS

320320 Naturally occuring potassium consist of \({\mathrm{0.01 \%}}\) of \({\mathrm{{ }^{40} \mathrm{~K}}}\) which has half life of \({\mathrm{1.28 \times 10^{9}}}\) years. Calculate the activity of 1.00 g sample of KCl .

1 \(4.37 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
2 \(1.28 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
3 \(4.37 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
4 \(1.28 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
CHXII04:CHEMICAL KINETICS

320321 Which of the following represents the expression for \(\dfrac{3}{4}^{\text {th }}\) life of a first order reaction?

1 \(\frac{{\rm{k}}}{{{\rm{2}}{\rm{.303}}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
2 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
3 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log4}}\)
4 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log3}}\)
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CHXII04:CHEMICAL KINETICS

320317 A radioactive isotope having a half-life period of 3 days was received after 12 days. If \(3 \mathrm{~g}\) of the isotope is left in the container, what would be the initial mass of the isotope?

1 \(12 \mathrm{~g}\)
2 \({\text{36 g}}\)
3 \(48 \mathrm{~g}\)
4 \(24 \mathrm{~g}\)
JEE - 2013
CHXII04:CHEMICAL KINETICS

320318 If \(60 \%\) of a first-order reaction was completed in \(60 \mathrm{~min}, 50 \%\) of the same reaction would be completed in approximately

1 \(40 \mathrm{~min}\)
2 \(50 \mathrm{~min}\)
3 \(45 \mathrm{~min}\)
4 \(60 \mathrm{~min}\)
KCET - 2010
CHXII04:CHEMICAL KINETICS

320319 Which of the following statement is not correct?

1 In zero order reaction, the rate of reaction remains constant throughout.
2 A second order reaction would become a pseudo first order reaction, when one of the reactants is taken in large excess.
3 The units of first order rate constant depends on the units of the concentration terms used.
4 In the first order reaction, the plot of \(\log\) (a-x) v/s time follows straight ine equation
CHXII04:CHEMICAL KINETICS

320320 Naturally occuring potassium consist of \({\mathrm{0.01 \%}}\) of \({\mathrm{{ }^{40} \mathrm{~K}}}\) which has half life of \({\mathrm{1.28 \times 10^{9}}}\) years. Calculate the activity of 1.00 g sample of KCl .

1 \(4.37 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
2 \(1.28 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
3 \(4.37 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
4 \(1.28 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
CHXII04:CHEMICAL KINETICS

320321 Which of the following represents the expression for \(\dfrac{3}{4}^{\text {th }}\) life of a first order reaction?

1 \(\frac{{\rm{k}}}{{{\rm{2}}{\rm{.303}}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
2 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
3 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log4}}\)
4 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log3}}\)
NEET DIGITAL LIBRARY
CHXII04:CHEMICAL KINETICS

320317 A radioactive isotope having a half-life period of 3 days was received after 12 days. If \(3 \mathrm{~g}\) of the isotope is left in the container, what would be the initial mass of the isotope?

1 \(12 \mathrm{~g}\)
2 \({\text{36 g}}\)
3 \(48 \mathrm{~g}\)
4 \(24 \mathrm{~g}\)
JEE - 2013
CHXII04:CHEMICAL KINETICS

320318 If \(60 \%\) of a first-order reaction was completed in \(60 \mathrm{~min}, 50 \%\) of the same reaction would be completed in approximately

1 \(40 \mathrm{~min}\)
2 \(50 \mathrm{~min}\)
3 \(45 \mathrm{~min}\)
4 \(60 \mathrm{~min}\)
KCET - 2010
CHXII04:CHEMICAL KINETICS

320319 Which of the following statement is not correct?

1 In zero order reaction, the rate of reaction remains constant throughout.
2 A second order reaction would become a pseudo first order reaction, when one of the reactants is taken in large excess.
3 The units of first order rate constant depends on the units of the concentration terms used.
4 In the first order reaction, the plot of \(\log\) (a-x) v/s time follows straight ine equation
CHXII04:CHEMICAL KINETICS

320320 Naturally occuring potassium consist of \({\mathrm{0.01 \%}}\) of \({\mathrm{{ }^{40} \mathrm{~K}}}\) which has half life of \({\mathrm{1.28 \times 10^{9}}}\) years. Calculate the activity of 1.00 g sample of KCl .

1 \(4.37 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
2 \(1.28 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
3 \(4.37 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
4 \(1.28 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
CHXII04:CHEMICAL KINETICS

320321 Which of the following represents the expression for \(\dfrac{3}{4}^{\text {th }}\) life of a first order reaction?

1 \(\frac{{\rm{k}}}{{{\rm{2}}{\rm{.303}}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
2 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
3 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log4}}\)
4 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log3}}\)
Join With Us for More Updates
CHXII04:CHEMICAL KINETICS

320317 A radioactive isotope having a half-life period of 3 days was received after 12 days. If \(3 \mathrm{~g}\) of the isotope is left in the container, what would be the initial mass of the isotope?

1 \(12 \mathrm{~g}\)
2 \({\text{36 g}}\)
3 \(48 \mathrm{~g}\)
4 \(24 \mathrm{~g}\)
JEE - 2013
CHXII04:CHEMICAL KINETICS

320318 If \(60 \%\) of a first-order reaction was completed in \(60 \mathrm{~min}, 50 \%\) of the same reaction would be completed in approximately

1 \(40 \mathrm{~min}\)
2 \(50 \mathrm{~min}\)
3 \(45 \mathrm{~min}\)
4 \(60 \mathrm{~min}\)
KCET - 2010
CHXII04:CHEMICAL KINETICS

320319 Which of the following statement is not correct?

1 In zero order reaction, the rate of reaction remains constant throughout.
2 A second order reaction would become a pseudo first order reaction, when one of the reactants is taken in large excess.
3 The units of first order rate constant depends on the units of the concentration terms used.
4 In the first order reaction, the plot of \(\log\) (a-x) v/s time follows straight ine equation
CHXII04:CHEMICAL KINETICS

320320 Naturally occuring potassium consist of \({\mathrm{0.01 \%}}\) of \({\mathrm{{ }^{40} \mathrm{~K}}}\) which has half life of \({\mathrm{1.28 \times 10^{9}}}\) years. Calculate the activity of 1.00 g sample of KCl .

1 \(4.37 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
2 \(1.28 \times {10^8}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
3 \(4.37 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
4 \(1.28 \times {10^9}\,{\rm{yea}}{{\rm{r}}^{ - 1}}\)
CHXII04:CHEMICAL KINETICS

320321 Which of the following represents the expression for \(\dfrac{3}{4}^{\text {th }}\) life of a first order reaction?

1 \(\frac{{\rm{k}}}{{{\rm{2}}{\rm{.303}}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
2 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log}}\frac{{\rm{4}}}{{\rm{3}}}\)
3 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log4}}\)
4 \(\frac{{{\rm{2}}{\rm{.303}}}}{{\rm{k}}}{\rm{log3}}\)