For the following reaction 2 X + Y → k P the rate of reaction is d [ P ] dt = k [ X ] . Two moles of X are mixed with one mole of Y to make 1 . 0 L of solution. At 50 s , 0 . 5 mole of Y is left in the reaction mixture. The correct statement(s) about the reaction is(are) ( Use: ln 2 = 0 . 693 )

At 100 s , - d Y dt = 3 . 46 × 10 - 3 mol L - 1 s - 1

The rate constant, k , of the reaction is 13 . 86 × 10 - 4 s - 1 .

HARD

JEE Advanced

IMPORTANT

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For a first order reaction $A (g) \to 2 B (g) + C (g)$ at constant volume and 300 K, the total pressure at the beginning $(t = 0)$ and at time are $p_{0} and p_{t}$ , respectively. Initially, only A is present with concentration ${[A]}_{0}$ , and $t_{\frac{1}{3}}$ is the time required for the partial pressure of A to reach $1 / 3^{rd}$ of its initial value. The correct option(s) is (are)
(Assume that all these gases behave as ideal gases)

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Important Questions on Chemical Kinetics

HARD

JEE Advanced

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Advanced Paper 2 - 2018>Q 5

Consider the following reversible reaction:

A (g) + B (g) ⇌ AB (g)

The activation energy of the backward reaction exceeds that of the forward reaction by

2 RT

(in

{mol}^{- 1}

). If the pre-exponential factor of the forward reaction is

4

times that of the reverse reaction, the absolute value of

∆ G^{⊝} (in J {mol}^{- 1})

for the reaction at

300 K

is ____.

(Given;

\ln (2) = 0 .7, = 2500 J {mol}^{- 1} at 300 K

and

G

is the Gibbs energy)

HARD

JEE Advanced

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Advanced Paper 2 - 2017>Q 6

In a bimolecular reaction, the steric factor

P

was experimentally determined to be

4.5

. The correct option(s) among the following is(are)

EASY

JEE Advanced

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Advanced Paper 2 - 2014>Q 8

For the elementary reaction

M \to N

, the rate of disappearance of

M

increases by a factor of

8

upon doubling the concentration of

M

. The order of the reaction with respect to

M

HARD

JEE Advanced

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Advanced Paper 1 - 2020>Q 9

{}_{92}^{238}U

is known to undergo radioactive decay to form

{}_{82}^{206}{Pb}

by emitting alpha and beta particles. A rock initially contained

68 \times 10^{- 6} g

{}_{92}^{238}U

. If the number of alpha particles that it would emit during its radioactive decay of

{}_{92}^{238}U

{}_{82}^{206}{Pb}

in three half-lives is

Z \times 10^{18}

, then what is the value of

Z

HARD

JEE Advanced

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Advanced Paper 1 - 2019>Q 10

Consider the kinetic data given in the following table for the reaction

A + B + C \to

Product.

Experiment No.	$[A]$ $(m o l {d m}^{- 3})$	$[B]$ $(m o l d m^{- 3})$	$[C]$ $(m o l d m^{- 3})$	Rate of reaction $(m o l d m^{- 3} s^{- 1})$
$1$	$0.2$	$0.1$	$0.1$	$6.0 \times 10^{- 5}$
$2$	$0.2$	$0.2$	$0.1$	$6.0 \times 10^{- 5}$
$3$	$0.2$	$0.1$	$0.2$	$1.2 \times 10^{- 4}$
$4$	$0.3$	$0.1$	$0.1$	$9.0 \times 10^{- 5}$

The rate of the reaction for

[A] = 0.15 m o l d m^{- 3}, [B] = 0.25 m o l d m^{- 3}

and

[C] = 0.15 m o l d m^{- 3}

is found to be

Y \times 10^{- 5} m o l d m^{- 3} s^{- 1} .

The value of

Y

is __________

HARD

JEE Advanced

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Advanced Paper 1 - 2016>Q 11

According to the Arrhenius equation,

HARD

JEE Advanced

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Advanced Paper 1 - 2013>Q 12

In the reaction,

P + Q \to R + S

the time taken for

75 %

reaction of

P

is twice the time taken for

50 %

reaction of

P

. The concentration of

Q

varies with reaction time as shown in the figure.The overall order of the reaction is:

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Important Questions on Chemical Kinetics

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