HARD

11th CBSE

IMPORTANT

Earn 100

What is the entropy change for conversion of one gram of ice to water at $273 K$ and one atmospheric pressure ( $Δ_{fus} H = 6.025 kJ {mol}^{- 1}$ )?

Important Questions on Thermodynamics

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE>Q 6

The entropy change for the vaporisation of water is

109 J K^{- 1} {mol}^{- 1}

. Calculate the enthalpy Change for the vaporisation of water at

373 K

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE>Q 7

Calculate the entropy change for the conversion of

2

moles of liquid water at

373 K

to vapours, if

Δ_{vap} H

37.3 kJ {mol}^{- 1}

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE>Q 8

The enthalpy of vaporisation of benzene (

C_{6} H_{6}

) is

30.8 kJ {mol}^{- 1}

at its boiling point (

80.1 ° C

). Calculate the entropy change in going from
(i) liquid to vapour and (ii) vapour to liquid at

80.1 ° C

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE

10 kg

of cold water at

2 ° C

absorbs

50 J

of heat from the surroundings which were at a temperature of

37 ° C

. What is the entropy change of the system? Assume the change in temperature of the water and the surroundings to be negligible.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE

10 kg

of cold water at

2 ° C

absorbs

50 J

of heat from the surroundings which were at a temperature of

37 ° C

. What is the entropy change of the surroundings? Assume the change in temperature of the water and the surroundings to be negligible.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE

10 kg

of cold water at

2 ° C

absorbs

50 J

of heat from the surroundings which were at a temperature of

37 ° C

. What is the entropy change of the universe? Assume the change in temperature of the water and the surroundings to be negligible.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE>Q 1

The enthalpy and entropy changes for the reaction

C (s) diamond + O_{2} \to {CO}_{2} (g)

25 ° C

and

1 atm

are

- 393.4 kJ {mol}^{- 1}

and

0.006 kJ K^{- 1} {mol}^{- 1}

respectively. Is the conversion of

diamond to {CO}_{2}

at room temperature a spontaneous process?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 7 - Thermodynamics>PROBLEMS FOR PRACTICE>Q 2

For the reaction

{Ag}_{2} O (s) \to 2 Ag (s) + \frac{1}{2} O_{2} (g)

∆ H

30.56 kJ {mol}^{- 1}

and

∆ S

66 J K^{- 1} {mol}^{- 1}

at one atmosphere pressure. Calculate the temperature at which

∆ G

for it will be zero. What will be the direction of the reaction at this temperature and at temperatures above or below this temperature and why?

What is the entropy change for conversion of one gram of ice to water at 273 K and one atmospheric pressure (ΔfusH=6.025 kJ mol–1)?

Important Questions on Thermodynamics

Learn and Prepare for any exam you want !

What is the entropy change for conversion of one gram of ice to water at $273 K$ and one atmospheric pressure ( $Δ_{fus} H = 6.025 kJ {mol}^{- 1}$ )?