EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2021>Q 13

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IMPORTANT

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Higher order $(> 3)$ reactions are rare due to

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Important Questions on Chemical Kinetics

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2020>Q 1

For an elementary reaction

2 A + 3 B \to 4 C + D

the rate of appearance of

C

at time

' t'

is

2.8 \times 10^{- 3} mol L^{- 1} S^{- 1}

. Rate of disappearance of

B

at

' t'

,

t

will be

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2018>Q 2

For the reaction,

2 {SO}_{2} + O_{2} ⇌ 2 {SO}_{3}

, The rate of disappearance of

O_{2}

is

2 \times 10^{- 4} mol L^{- 1} s^{- 1}

. The rate of appearance of

{SO}_{3}

is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2019>Q 3

1 L

of

2 M {CH}_{3} COOH

is mixed with

1 L

of

3 M C_{2} H_{5} OH

to form an ester. The rate of the reaction with respect to the initial rate when each solution is diluted with an equal volume of water will be

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2021>Q 4

The rate of a gaseous reaction is given by the expression

k [A] [B]^{2} .

If the volume of vessel is reduced to one half of the initial volume, the reaction rate as compared to original rate is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2020>Q 5

The time required for

60 %

completion of a first order reaction is

50 \min

. The time required for

93.6 %

completion of the same reaction will be

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2019>Q 6

The plot of

t_{1 / 2}

v/s

[R]_{0}

for a reaction is a straight-line parallel to

x

-axis. The unit for the rate constant of this reaction is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2018>Q 7

The value of rate constant of a pseudo-first-order reaction

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 17 - Chemical Kinetics>KCET (UG) 2021>Q 8

If the rate constant for a first order reaction is

k,

the time

(t)

required for the completion of

99 %

of the reaction is given by