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Which of the following process has negat...

Which of the following process has negative value of `DeltaS` ?

A

Dissolution of sugar in water

B

Stretching of rubber band

C

Decomposition of lime stone

D

Evaporation of water.

Text Solution

Verified by Experts

The correct Answer is:
B
In rubber the long flexible macromolecules coli up in a random way. When stretched, it gets uncoiled. The uncoiled arrangement has more specific geometry,
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. When a solid changes into liquid, the entropy

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  2. The least random state of water system is

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

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

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

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  6. When the egg is hard boiled, there is

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

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  8. In any natural process

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

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

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

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  12. Which of the following has highest entropy?

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

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

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

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  16. Which one of the following is correct ?

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

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  18. The sign of DeltaG for the process of melting of ice at 273K and 1 atm...

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  19. For a hypothetical reaction A+B to C if DeltaG^(@) gt 0

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  20. The free energy change for a reversible reaction at equilibrium is

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