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

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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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Important Questions on Chemical Kinetics

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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

if

(P > P_{0})

. The expression for the rate constant

K

is

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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

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 11

The rate constant of the production of $2 B(g)$ by the reaction, $A (g) \overset{Δ}{⟶} 2 B (g)$ is $2.48 \times 10^{- 4} s^{- 1}$

A $1 : 1$ molar ratio of $A$ to $B$ in the reaction mixture is attained after

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 12

Two substances

A

and are present such that

[A]_{0} = 4 [B]_{0}

and half life of

A

is 5 minute and that of

B

is 15 minute. If they start decaying at the same time following first order kinetics how much time will the concentration of both of them would be the same?

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 13

The reaction

A ⟶ B

follows first order kinetics. The time taken for

0.80

mole of A to produce

0.60

mole of

B

is 1 hour. What is the time taken for conversion of

0.90

mole of

A

to produce

0.675

mole of

B

?

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Gamma Question Bank for Medical Chemistry>Chapter 18 - Chemical Kinetics>Assignment>Q 14

If

Question Image

find $B %$

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	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)	$5.4 \times 10^{- 3}$	$0.015$	$0.45$

For a gaseous phase reaction 2A+B2→2AB, the following rate data was obtained at 300 K Rate of disappearance of B2 (mole/litre min) Concentration (i) 1.8×10-3 0.015 0.15 (ii) 1.08×10-2 0.09 0.15 (iii) 5.4×10-3 0.015 0.45 The rate constant for the reaction is

Important Questions on Chemical Kinetics

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