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Change in entropy is negative for...

Change in entropy is negative for

A

Bromine `(l) rarr` Bromine (g)

B

`C(s)+H_(2)O(g)rarrCO(g)+H_(2)(g)`

C

`N_(2)(g,10 atm)rarr N_(2)(g, 1 atm)`

D

`Fe(at 400 K)rarr Fe(at 300 K)`

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The correct Answer is:
D
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ALLEN-THERMODYNAMICS -EXERCISE -2
  1. Entropy means

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  2. Delta S for the reaction : MgCO(3) rightarrow MgO(s) + CO(2)(g)

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  3. Change in entropy is negative for

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  4. In which reaction Delta S is positive :-

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  5. When the egg is hard boiled, there

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  6. If S^@" for "H(2), Cl2 and HCl are 0.13, 0.22 and 0.19" kJ K"^(-1)"mol...

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  7. Which has the least entropy :

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  8. When two gases are mixed the entropy :-

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  9. The enthalpy of vaporization for water is 186.5 KJ mol^(−1) ,the entro...

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  10. Calculate the enthalpy of vaporisation per mole for ethanol. Given Del...

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  11. If 900J//g of heat is exchanged at boiling point of water then water...

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  12. Calculate the enthalpy of vaporisation per mole for ethanol. Given Del...

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  13. 5 mole of an ideal gas expands reversibly from a volume of 8" dm"^(3)"...

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  14. In a spontaneous irreversible process the total entropy of the system ...

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

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  16. Calculate the entropy of Br(2)(g) in the reaction H(2)(g)+Br(2)(g)rarr...

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

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  18. In which of the following case entropy decreases

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  19. Which of the following state function is not zero at standard state :-

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  20. Entropy change for an adiabatic reversible process is

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