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When a gas is allowed to expand from a r...

When a gas is allowed to expand from a region of extremly high pressure to a region of extremly low pressure, there occurs a change of temperature. This phenomenon is associated with

A

First law of thermodynamics

B

Second law of thermodynamics

C

Joule-Thomson effect

D

Gibbs Helmholtz equation. `II`

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The correct Answer is:
C
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. In case of an ideal gas, Joule Thomson effect is

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  2. Which of the following gases show a heating effect when allowed to exp...

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  3. When a gas is allowed to expand from a region of extremly high pressur...

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  4. Joule Thomson coefficient is given by the expression

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  5. Entropy of system depends upon

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  6. The units of entropy are

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  7. Ammonium chloride when dissolved in water leads to a cooling sensation...

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  8. An isolated system comprises the liquid in equilibrium with vapours. A...

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  9. For the gaseous reaction involving the complete combustion of iso-buta...

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  10. One of the following reactions involves decrease in entropy

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  11. When a solid changes into liquid, the entropy

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  12. The least random state of water system is

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  13. Which of the following process has negative value of DeltaS ?

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  14. Which of the following describes the criterion of spontaneity?

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  15. Which law of thermodynamics helps in calculating the absolute entropie...

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  16. When the egg is hard boiled, there is

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  17. For the reversible process, the value of DeltaS is given by the expres...

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  18. In any natural process

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  19. For which of the following cases is DeltaS=DeltaH//T

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  20. In a reversible process, Delta S(sys) + Delta S(surr) is

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