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If the activation energy of forward and backward reactions in a chemical reaction, $A ⟶ B$ is $15.5$ and $22.7 kJ {mol}^{- 1}$ respectively, then select the correct option for the reaction.

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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 15

For the two first order reactions, rate constants in terms of temperature are given below

A ⟶ P,

k_{1} = 10^{15} e^{(\frac{- 1500}{T})}

B ⟶ Q,

k_{2} = 10^{14} e^{(\frac{- 1000}{T})}

If initially

(t = 0)

, both reaction started with same initial concentration of

A

and

B

, then at what temperature both the reaction will have same initial rate?

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 1

For the reaction,

N_{2} O_{5} \to 2 {NO}_{2} + \frac{1}{2} O_{2}

.
Given : -

\frac{d [N_{2} O_{5}]}{dt} = K_{1} [N_{2} O_{5}]

\frac{d [{NO}_{2}]}{dt} = K_{2} [N_{2} O_{5}]

and

\frac{d [O_{2}]}{dt} = K_{3} [N_{2} O_{5}]

The relation between

K_{1}, K_{2}

and

K_{3}

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 2

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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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

If the activation energy of forward and backward reactions in a chemical reaction, A⟶B is 15.5 and 22.7 kJ mol-1 respectively, then select the correct option for the reaction.

Important Questions on Chemical Kinetics

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If the activation energy of forward and backward reactions in a chemical reaction, $A ⟶ B$ is $15.5$ and $22.7 kJ {mol}^{- 1}$ respectively, then select the correct option for the reaction.