EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET 2021 (19-Aug Afternoon)>Q 1

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When the temperature of $2$ moles of an ideal gas is increased by $20 ° C$ at constant pressure, find the work involved in the process.

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Important Questions on Thermodynamics

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET - 20 Aug 2021 Afternoon>Q 3

Find the approximate value of

(ΔH - ΔU)

in

J \cdot {mol}^{- 1}

, for the formation of

CO

from its elements at

298 K

.

(R = 8.314 J \cdot K^{- 1} {mol}^{- 1})

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET 2021 (19-Aug Forenoon)>Q 8

Standard entropies of

X_{2}, Y_{2}

and

{XY}_{3}

are

60, 40

and

50 J / K / mol

respectively. At what temperature the following reaction will be at equilibrium

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET - 20 Aug 2021 Afternoon>Q 2

When an ideal gas expands isothermally from

5 m^{3}

to

10 m^{3}

at

25 ° C

against a constant pressure of

10^{7} N \cdot m^{- 2}

, then the work done on the gas is

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET 2020 (Sep-23 Shift-1)>Q 4

For the reaction.

2 H_{2} (g) + O_{2} {(g)}_{} ⟶ 2 H_{2} O {(g)}_{}, at 300 K, ΔG

and

ΔH

of water are

- 228.4 kJ . {mol}^{- 1}

and

- 241.60 kJ . {mol}^{- 1}

, respectively. Then calculate the value of change in entropy for the given reaction.

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET 2019 (21-Apr Shift-2)>Q 5

What is the nature of reaction at

298 K

, if the entropy change and enthalpy change for a chemical reaction are

7.4 cal

K^{- 1}

and

- 2.5 \times 10^{3} cal

, respectively.

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET 2018 (25-APR Shift-1)>Q 6

At the temperature

T (K)

for the reaction

X_{2} O_{4} (l) \to 2 {XO}_{2} (g) ΔU = x kJ {mol}^{- 1}

ΔS = y {JK}^{- 1} {mol}^{- 1}

. Gibbs energy change for the reaction is

(

Assume

X_{2} O_{4}, {XO}_{2}

are ideal gases

)

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET 2021 (19-Aug Forenoon)>Q 7

If a chemical reaction is known to be non-spontaneous at

298 K

but spontaneous at

350 K

, then which among the following conditions is true for the reaction?

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Thermodynamics>AP EAPCET - 20 Aug 2021 Forenoon>Q 9

For the reaction

H_{2} O_{(l)} ⟶ H_{2} O_{(g)}

at

T = 100 ° C

and

P = 1 atm

, choose the correct option: