For the reaction, 2 A + B → products, when the concentration of A and B both were doubled, the rate of the reaction increased from 0.3 m o l L - 1 s - 1 to 2.4 m o l L - 1 s - 1 . When the concentration of A alone is doubled, the rate increased from 0.3 m o l L - 1 s - 1 to 0.6 m o l L - 1 s - 1 . Which one of the following statements is correct?

Order of the reaction with respect to B is 2

Total order of the reaction is 4

Order of the reaction with respect to A is 2

Order of the reaction with respect to B is 1

Consider the given plot of enthalpy of the following reaction between A and B . A + B → C + D . Identify the incorrect statement.

Activation enthalpy to form C is 5 k J m o l - 1 less than that to form D .

Formation of A and B from C has highest enthalpy of activation.

D is kinetically stable product.

C is the thermodynamically stable product.

HARD

JEE Main

IMPORTANT

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For the following reactions
$A \overset{700 K}{\to} Product$
$A \overset{500 K}{\underset{catalyst}{\to}} Product$
It was found that the $E_{a}$ is decreased by $30 K J / m o l$ in the presence of catalyst. If the rate remains unchanged, the activation energy for catalysed reaction is (Assume pre-exponential factor is same)

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Important Questions on Chemical Kinetics

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 9th January 2019 Shift 2>Q 9

For the reaction,

2 A + B \to

products, when the concentration of

A

and

B

both were doubled, the rate of the reaction increased from

0.3 m o l L^{- 1} s^{- 1}

2.4 m o l L^{- 1} s^{- 1} .

When the concentration of

A

alone is doubled, the rate increased from

0.3 m o l L^{- 1} s^{- 1}

0.6 m o l L^{- 1} s^{- 1} .

Which one of the following statements is correct?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 9th January 2019 Shift 1>Q 10

The following results were obtained during kinetic studies of the reaction.

2 A + B \to

product

Experiment	$[A]$ $(in mol L^{- 1})$	$[B]$ $(i n m o l L^{- 1})$	Initial rate of reaction $(in mol L^{- 1} \min^{- 1})$
$I$	$0.10$	$0.20$	$6.93 \times 10^{- 3}$
$II$	$0.10$	$0.25$	$6.93 \times 10^{- 3}$
$III$	$0.20$	$0.30$	$1.386 \times 10^{- 2}$

The time (in minutes) required to consume half of

A

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 9th April 2019 Shift 2>Q 11

Consider the given plot of enthalpy of the following reaction between

A

and

B .

A + B \to C + D .

Identify the incorrect statement.
Question Image

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 9th April 2019 Shift 1>Q 12

The given plots represent the variation of the concentration of a reactant $R$ with time for two different reactions $(i) and (ii)$ . The respective orders of the reaction are
(i) Question Image

(ii) Question Image

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 9th April 2017>Q 13

The rate of a reaction quadruples when the temperature changes from

300

310 K

. The activation energy of this reaction is:

(Assume Activation energy and pre-exponential factor are independent of temperature;

\ln (2) = 0.693; R = 8.314 J {mol}^{- 1} K^{- 1}

)

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 9th April 2016>Q 14

The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below:

O_{3} (g) + {Cl}^{•} \to O_{2} (g) + {ClO}^{•} (g)

...(i)

k_{i} = 5.2 \times 10^{9} L m o l^{- 1} s^{- 1}

{ClO}^{•} (g) + O^{•} (g) \to O_{2} (g) + {Cl}^{•} (g)

...(ii)

k_{i i} = 2.6 \times 10^{10} L m o l^{- 1} s^{- 1}

The closest rate constant for the overall reaction

O_{3} (g) + O^{•} (g) \to 2 O_{2} (g)

is:

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 9th April 2014>Q 15

The half-life period of a first-order reaction is

15 minutes

. The amount of substance left after one hour will be

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 8th January 2020 Shift 2>Q 16

Consider the following plots of rate constant versus

\frac{1}{T}

for four different reactions. Which of the following orders is correct for the activation energies of these reactions?
Question Image

For the following reactions A→700KProduct A→catalyst500KProduct It was found that the Ea is decreased by 30 KJ/mol in the presence of catalyst. If the rate remains unchanged, the activation energy for catalysed reaction is (Assume pre-exponential factor is same)

Important Questions on Chemical Kinetics

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