EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2018>Q 1

EASY

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IMPORTANT

Earn 100

The bond dissociation enthalpy of gaseous $H_{2}, {Cl}_{2}$ and $HCl$ are $435.243$ and $431 kJ {mol}^{- 1}$ respectively. In the same unit, enthalpy of formation of $HCl$ gas is

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Important Questions on Thermodynamics

EASY

Assam CEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2017>Q 2

The entropy of a perfectly crystalline solid at absolute zero temperature is:

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2016>Q 3

365

calorie heat is required to evaporate one gram water at

100 {}^{\circ}C

. If the work done by the system is

651.3

calorie, then the increase in internal energy per mole of water will be

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2016>Q 4

For a reaction,

ΔG = - 67.2 kJ

and

ΔH = - 42 kJ

at

300 K

temperature. The entropy change is

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2016>Q 5

The standard enthalpy of combustion of carbon is

393.5 kJ {mol}^{- 1}

. The amount of heat released when carbon and oxygen gas produce

35.2 g

of

{CO}_{2}

is

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2016>Q 6

The volume of one mole of an ideal gas is increased to

10

times of its initial volume isothermally and reversibly. The change in entropy is

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2016>Q 7

A reaction to be spontaneous at all temperatures,

ΔH

and

ΔS

must be respectively

EASY

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 4 - Thermodynamics>Assam CEE 2016>Q 8

Given that bond energies of

H - H

and

Cl - Cl

are

430 kJ {mol}^{- 1}

and

240 kJ {mol}^{- 1}

respectively and

{ΔH}_{f}

for

HCl

is

- 90 kJ {mol}^{- 1}

. The bond energy of

HCl

is