Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 11

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Activation energy $(E_{a})$ and rate constants ( $k_{1}$ and $k_{2}$ ) of a chemical reaction at two different temperatures ( $T_{1}$ and $T_{2}$ ) are related by:

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Important Questions on Chemical Kinetics

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 12

For a reaction

r = k {({CH}_{3} {COCH}_{3})}^{3 / 2}

the unit of rate of reaction and rate constant, respectively are:-

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 13

t_{1 / 2} v / s \frac{1}{a^{2}}

is a straight line graph then determine the order of reaction is :-

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 14

A reaction having equal energies of activation for forward and reverse reaction has:

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 15

What is the activation energy for a reaction if its rate doubles when the temperature is raised from

20 ° C

to

35 ° C

?

(R = 8.314 J {mol}^{- 1} K^{- 1})

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 16

Energy of activation of forward reaction for an endothermic process is

50 kJ

and enthalpy change is

20 kJ

then activation energy change for backward reaction will be :-

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 19

The activation energy of a reaction can be determined from the slope of which of the following graphs?

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 21

The rate constant of the reaction

A \to B

is

0.6 \times 10^{- 3} {Ms}^{- 1}

. If the concentration of

A

is

5 M

then concentration of

B

after

20

minutes is :

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Beta Question Bank for Medical: Chemistry>Chapter 10 - Chemical Kinetics>EXERCISE-II (Previous Year Questions)>Q 23

For a reaction

2 N_{2} O_{5} \to 4 {NO}_{2} + O_{2}

Initial concentration of

N_{2} O_{5}

is

7.2 mol L^{- 1}

and after

20

minute

[{NO}_{2}]

is

2.4 mol L^{- 1},

then what will be the rate of decomposition of

N_{2} O_{5}

in mol

L^{- 1} \overset{}{mi n^{- 1}}