QBManager

CHXI06:THERMODYNAMICS

369129 The correct statement regarding entropy is

1 at absolute zero temperature, entropy of a perfectly crystalline solid is zero

2 at absolute zero temperature, the entropy of a perfectly crystalline substance is + ve

3 at absolute zero temperature, the entropy of all crystalline substances is zero

4 at

0^{\circ} C

, the entropy of a perfect crystalline solid is zero.

KCET - 2016

CHXI06:THERMODYNAMICS

369130 Which of the is the correct statement of third law of thermodynamics?

1 At absolute zero temperature, the entropy of perfectly crystalline substance is positive.

2 At absolute zero temperature, the entropy of perfectly crystalline substance is taken to be zero.

3 At

0^{\circ} C

, the entropy of a perfectly crystalline substance is taken to be zero.

4 At absolute zero temperature, the entropy of all crystalline substance is taken to be zero.

CHXI06:THERMODYNAMICS

369131 The graph is plotted between the absolute entropy and the temperature
supporting img

1

I I I I I I

v a p o u r i s a t i o n f u s i o n t r a n s i t i o n

2

f u s i o n t r a n s i t i o n v a p o u r i s a t i o n

3

t r a n s i t i o n f u s i o n v a p o u r i s a t i o n

4

t r a n s i t i o n v a p o u r i s a t i o n f u s i o n

CHXI06:THERMODYNAMICS

369132 Assertion :
Entropy of all crystalline solids is taken as zero at absolute zero of temperature.
Reason :
At zero degree absolute, the constituent particles become completely motionless.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI06:THERMODYNAMICS

369252 Enthalpy of vaporization of benzene is +35.3 $kJ {mol}^{- 1}$ at its boiling point, $80^{\circ} C$ . The entropy change in the transition of the vapour to liquid at its boiling point $(i n J K^{- 1} m o l^{- 1})$ is

1

- 441

2

- 100

3

+ 441

4

+ 100

Explanation:

According to Gibbs' formula,
$Δ G = Δ H - T Δ S$
At equilibrium, $Δ G = 0$
And entropy decreases on going from vapour to liquid.i.e., $Δ H = T Δ S$
$Δ S = - \frac{Δ H}{T} = - \frac{35300}{80 + 273} = - 100 {JK}^{- 1} {mol}^{- 1}$

KCET - 2010

CHXI06:THERMODYNAMICS

369129 The correct statement regarding entropy is

1 at absolute zero temperature, entropy of a perfectly crystalline solid is zero

2 at absolute zero temperature, the entropy of a perfectly crystalline substance is + ve

3 at absolute zero temperature, the entropy of all crystalline substances is zero

4 at

0^{\circ} C

, the entropy of a perfect crystalline solid is zero.

KCET - 2016

CHXI06:THERMODYNAMICS

369130 Which of the is the correct statement of third law of thermodynamics?

1 At absolute zero temperature, the entropy of perfectly crystalline substance is positive.

2 At absolute zero temperature, the entropy of perfectly crystalline substance is taken to be zero.

3 At

0^{\circ} C

, the entropy of a perfectly crystalline substance is taken to be zero.

4 At absolute zero temperature, the entropy of all crystalline substance is taken to be zero.

CHXI06:THERMODYNAMICS

369131 The graph is plotted between the absolute entropy and the temperature
supporting img

1

I I I I I I

v a p o u r i s a t i o n f u s i o n t r a n s i t i o n

2

f u s i o n t r a n s i t i o n v a p o u r i s a t i o n

3

t r a n s i t i o n f u s i o n v a p o u r i s a t i o n

4

t r a n s i t i o n v a p o u r i s a t i o n f u s i o n

CHXI06:THERMODYNAMICS

369132 Assertion :
Entropy of all crystalline solids is taken as zero at absolute zero of temperature.
Reason :
At zero degree absolute, the constituent particles become completely motionless.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI06:THERMODYNAMICS

369252 Enthalpy of vaporization of benzene is +35.3 $kJ {mol}^{- 1}$ at its boiling point, $80^{\circ} C$ . The entropy change in the transition of the vapour to liquid at its boiling point $(i n J K^{- 1} m o l^{- 1})$ is

1

- 441

2

- 100

3

+ 441

4

+ 100

Explanation:

According to Gibbs' formula,
$Δ G = Δ H - T Δ S$
At equilibrium, $Δ G = 0$
And entropy decreases on going from vapour to liquid.i.e., $Δ H = T Δ S$
$Δ S = - \frac{Δ H}{T} = - \frac{35300}{80 + 273} = - 100 {JK}^{- 1} {mol}^{- 1}$

KCET - 2010

CHXI06:THERMODYNAMICS

369129 The correct statement regarding entropy is

1 at absolute zero temperature, entropy of a perfectly crystalline solid is zero

2 at absolute zero temperature, the entropy of a perfectly crystalline substance is + ve

3 at absolute zero temperature, the entropy of all crystalline substances is zero

4 at

0^{\circ} C

, the entropy of a perfect crystalline solid is zero.

KCET - 2016

CHXI06:THERMODYNAMICS

369130 Which of the is the correct statement of third law of thermodynamics?

1 At absolute zero temperature, the entropy of perfectly crystalline substance is positive.

2 At absolute zero temperature, the entropy of perfectly crystalline substance is taken to be zero.

3 At

0^{\circ} C

, the entropy of a perfectly crystalline substance is taken to be zero.

4 At absolute zero temperature, the entropy of all crystalline substance is taken to be zero.

CHXI06:THERMODYNAMICS

369131 The graph is plotted between the absolute entropy and the temperature
supporting img

1

I I I I I I

v a p o u r i s a t i o n f u s i o n t r a n s i t i o n

2

f u s i o n t r a n s i t i o n v a p o u r i s a t i o n

3

t r a n s i t i o n f u s i o n v a p o u r i s a t i o n

4

t r a n s i t i o n v a p o u r i s a t i o n f u s i o n

CHXI06:THERMODYNAMICS

369132 Assertion :
Entropy of all crystalline solids is taken as zero at absolute zero of temperature.
Reason :
At zero degree absolute, the constituent particles become completely motionless.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI06:THERMODYNAMICS

369252 Enthalpy of vaporization of benzene is +35.3 $kJ {mol}^{- 1}$ at its boiling point, $80^{\circ} C$ . The entropy change in the transition of the vapour to liquid at its boiling point $(i n J K^{- 1} m o l^{- 1})$ is

1

- 441

2

- 100

3

+ 441

4

+ 100

Explanation:

According to Gibbs' formula,
$Δ G = Δ H - T Δ S$
At equilibrium, $Δ G = 0$
And entropy decreases on going from vapour to liquid.i.e., $Δ H = T Δ S$
$Δ S = - \frac{Δ H}{T} = - \frac{35300}{80 + 273} = - 100 {JK}^{- 1} {mol}^{- 1}$

KCET - 2010

CHXI06:THERMODYNAMICS

369129 The correct statement regarding entropy is

1 at absolute zero temperature, entropy of a perfectly crystalline solid is zero

2 at absolute zero temperature, the entropy of a perfectly crystalline substance is + ve

3 at absolute zero temperature, the entropy of all crystalline substances is zero

4 at

0^{\circ} C

, the entropy of a perfect crystalline solid is zero.

KCET - 2016

CHXI06:THERMODYNAMICS

369130 Which of the is the correct statement of third law of thermodynamics?

1 At absolute zero temperature, the entropy of perfectly crystalline substance is positive.

2 At absolute zero temperature, the entropy of perfectly crystalline substance is taken to be zero.

3 At

0^{\circ} C

, the entropy of a perfectly crystalline substance is taken to be zero.

4 At absolute zero temperature, the entropy of all crystalline substance is taken to be zero.

CHXI06:THERMODYNAMICS

369131 The graph is plotted between the absolute entropy and the temperature
supporting img

1

I I I I I I

v a p o u r i s a t i o n f u s i o n t r a n s i t i o n

2

f u s i o n t r a n s i t i o n v a p o u r i s a t i o n

3

t r a n s i t i o n f u s i o n v a p o u r i s a t i o n

4

t r a n s i t i o n v a p o u r i s a t i o n f u s i o n

CHXI06:THERMODYNAMICS

369132 Assertion :
Entropy of all crystalline solids is taken as zero at absolute zero of temperature.
Reason :
At zero degree absolute, the constituent particles become completely motionless.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI06:THERMODYNAMICS

369252 Enthalpy of vaporization of benzene is +35.3 $kJ {mol}^{- 1}$ at its boiling point, $80^{\circ} C$ . The entropy change in the transition of the vapour to liquid at its boiling point $(i n J K^{- 1} m o l^{- 1})$ is

1

- 441

2

- 100

3

+ 441

4

+ 100

Explanation:

According to Gibbs' formula,
$Δ G = Δ H - T Δ S$
At equilibrium, $Δ G = 0$
And entropy decreases on going from vapour to liquid.i.e., $Δ H = T Δ S$
$Δ S = - \frac{Δ H}{T} = - \frac{35300}{80 + 273} = - 100 {JK}^{- 1} {mol}^{- 1}$

KCET - 2010

CHXI06:THERMODYNAMICS

369129 The correct statement regarding entropy is

1 at absolute zero temperature, entropy of a perfectly crystalline solid is zero

2 at absolute zero temperature, the entropy of a perfectly crystalline substance is + ve

3 at absolute zero temperature, the entropy of all crystalline substances is zero

4 at

0^{\circ} C

, the entropy of a perfect crystalline solid is zero.

KCET - 2016

CHXI06:THERMODYNAMICS

369130 Which of the is the correct statement of third law of thermodynamics?

1 At absolute zero temperature, the entropy of perfectly crystalline substance is positive.

2 At absolute zero temperature, the entropy of perfectly crystalline substance is taken to be zero.

3 At

0^{\circ} C

, the entropy of a perfectly crystalline substance is taken to be zero.

4 At absolute zero temperature, the entropy of all crystalline substance is taken to be zero.

CHXI06:THERMODYNAMICS

369131 The graph is plotted between the absolute entropy and the temperature
supporting img

1

I I I I I I

v a p o u r i s a t i o n f u s i o n t r a n s i t i o n

2

f u s i o n t r a n s i t i o n v a p o u r i s a t i o n

3

t r a n s i t i o n f u s i o n v a p o u r i s a t i o n

4

t r a n s i t i o n v a p o u r i s a t i o n f u s i o n

CHXI06:THERMODYNAMICS

369132 Assertion :
Entropy of all crystalline solids is taken as zero at absolute zero of temperature.
Reason :
At zero degree absolute, the constituent particles become completely motionless.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

CHXI06:THERMODYNAMICS

369252 Enthalpy of vaporization of benzene is +35.3 $kJ {mol}^{- 1}$ at its boiling point, $80^{\circ} C$ . The entropy change in the transition of the vapour to liquid at its boiling point $(i n J K^{- 1} m o l^{- 1})$ is

1

- 441

2

- 100

3

+ 441

4

+ 100

Explanation:

According to Gibbs' formula,
$Δ G = Δ H - T Δ S$
At equilibrium, $Δ G = 0$
And entropy decreases on going from vapour to liquid.i.e., $Δ H = T Δ S$
$Δ S = - \frac{Δ H}{T} = - \frac{35300}{80 + 273} = - 100 {JK}^{- 1} {mol}^{- 1}$

KCET - 2010

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Question Bank Series

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation: