Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 26

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The entropy for a spontaneous process always,

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Important Questions on Chemical Thermodynamics

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 3

What are the different types of thermodynamic systems?

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 27

The enthalpy of vaporization of water at

100 ° C

is

40.63 {kJmol}^{- 1}

. Its entropy of vaporization would be

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 28

Predict the sign of $∆ S$ in the following process. Give reasons for your answer.

$N_{2} O_{4} (g) \to 2 {NO}_{2} (g)$

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 29

In which of the following entropy decreases?

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 30

If an endothermic reaction is non-spontaneous at freezing point of water and becomes feasible at its boiling point, then:

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 31

The enthalpy and entropy change for the reaction

{Br}_{2} (I) + {Cl}_{2} (g) \to 2 BrCl (g)

are

30 kJ {mol}^{- 1}

and

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

, respectively. The temperature at which the reaction will be in equilibrium is

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 33

Which of the following statements about the spontaneous reaction occurring in a galvanic cell is always true?

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Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Chemical Thermodynamics>Exercise>Q 35

The enthalpy and the entropy change for a chemical reaction are

- 2.5 \times 10^{3} cal

and

7.4 cal \deg^{- 1}

, respectively. The reaction at

298 K

will be