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For the reaction, $N_{2} O_{4} (g) \underset{K_{2}}{\overset{K_{1}}{⇌}} 2 {NO}_{2} (g)$ , the rate of disappearance of ${NO}_{2}$ will be

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Important Questions on Chemical Kinetics

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 3

For the reaction

A + B \to

rightarrow products, it is found that order of

A

is 2 and the order of

B

is 3 in the rate expression. When the concentrations of both

A

and

B

are doubled the rate will increase by a factor

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 4

Nitric oxide (NO) reacts with oxygen to produce nitrogen dioxide

2 {NO}_{(g)} + O_{2} (g) \to 2 {NO}_{2 (g)}

, If the mechanism of reaction is

NO + O_{2} \overset{K}{⇌} {NO}_{3} (fast)

{NO}_{3} + NO \overset{K_{1}}{⟶} {NO}_{2} + {NO}_{2} (slow)

then rate law is

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 5

If the volume of closed vessel in which the following simple reaction is carried out is reduced to one third of original volume, the rate of reaction becomes

2 NO (g) + O_{2} (g) ⟶ 2 {NO}_{2} (g)

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 6

For a gaseous phase reaction $2 A + B_{2} \to 2 AB$ , the following rate data was obtained at $300 K$

	Rate of disappearance of $B_{2}$ (mole/litre min)	Concentration
(i)	$1.8 \times 10^{- 3}$	$0.015$	$0.15$
(ii)	$1.08 \times 10^{- 2}$	$0.09$	$0.15$
(iii)	$5.4 \times 10^{- 3}$	$0.015$	$0.45$

The rate constant for the reaction is

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 7

For a first order reaction, the time taken to reduce the initial concentration to a factor of

\frac{1}{4}

is 10 minute If the reduction in concentration is carried out to a factor of

\frac{1}{16}

, then time required will be

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 8

Consider the data below for a reaction

A \to B

Time (sec)	0	10	20	30
Rate	$1.60 \times 10^{- 2}$	$1.60 \times 10^{- 2}$	$1.60 \times 10^{- 2}$	$1.59 \times 10^{- 2}$

From the above data the order of reaction is

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 9

For a homogeneous gaseous reaction

A \to B + C + D

, the initial pressure was

P_{0}

while pressure after time

' t'

was

P

(P > P_{0})

. The expression for the rate constant

K

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 10

Inversion of a sugar follows first order rate equation which can be followed by noting the change in rotation of the plane of polarization of light in the polarimeter. If

r_{\infty}, r_{t}

and

r_{0}

are the rotations at

t = \infty, t = t

and

t = 0

then, first order reaction can be written as

For the reaction,N2O4( g)⇌K1K22NO2( g), the rate of disappearance of NO2 will be

Important Questions on Chemical Kinetics

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For the reaction, $N_{2} O_{4} (g) \underset{K_{2}}{\overset{K_{1}}{⇌}} 2 {NO}_{2} (g)$ , the rate of disappearance of ${NO}_{2}$ will be