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One of the following reactions involves ...

One of the following reactions involves decrease in entropy

A

Sublimation of dry ice

B

Crystallisation of salt from brine

C

Burning of rocket fuel

D

Decomposition of gaseous `N_(2)O_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
`NaCl(aq) to NaCl(s)`
Brine solution
Because, solids have less randomness.
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. An isolated system comprises the liquid in equilibrium with vapours. A...

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

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  3. One of the following reactions involves decrease in entropy

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  4. When a solid changes into liquid, the entropy

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  5. The least random state of water system is

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

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

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

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  9. When the egg is hard boiled, there is

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

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  11. In any natural process

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

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

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  14. According to third law of thermodynamics, the entropy at 0 K is zero f...

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  15. Which of the following has highest entropy?

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  16. The total entropy change for a system and its surroundings increases, ...

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  17. Which of the following provide exceptions to third law of thermodynami...

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  18. Which thermodynamics property provides a measure of randomness in the ...

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  19. Which one of the following is correct ?

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  20. An endothermic gaseous reaction, (1)/(2)X+Y to2Z proceeds spontane...

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