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Some statements are given with regard to...

Some statements are given with regard to entropy. The incorrect statement(s) are
(A) The absolute entropy of substances cannot be determined
(B) In standard state entropy of elements is always positive
(C ) The entropy of universe always decreases
(D) In a spontaneous process, for an isolated system the entropy of the system generally increases

A

A, B

B

B, C

C

A,C

D

Only C

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-OBJECTIVE EXERCISE - 1 (ENTORPY AND GIBBS ENERGY)
  1. Which of the following process has negative value of DeltaS?

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  2. For a spontaneous process, in a reaction

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  3. Some statements are given with regard to entropy. The incorrect statem...

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  4. For an irreversible process, the value of [DeltaS("(system)") + DeltaS...

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  5. A process is spontaneous at all temperatures when

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  6. 2H(2(g)) + O(2(g)) rarr 2H(2)O((l)) , DeltaH= -ve and DeltaG= -ve. The...

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  7. H((aq))^(+) + OH((aq))^(-) rarr H(2)O((l)) , Delta H = -ve and Delta G...

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  8. Among the following what is necessary condition for spontanity of a pr...

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  9. Which of the following is the condition for a non spontaneous reaction...

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  10. Based on the third law of themodynamics, the entropy can be obtained u...

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  11. A chemical reaction cannot occur at all if its

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  12. An equilibrium reaction X + Y hArr W +Z, Delta H= +ve is spontaneous i...

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  13. For the process Dry ice rarr CO(2(g))

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  14. For which of the process, Delta S is negative?

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  15. The process of evaporation of a liquid is accompanised by (A) Increa...

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  16. The favourable conditions for a spontaneous reaction are

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  17. A reaction has both DH and DS negative. The rate of reaction

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  18. At 27^@C the reaction, C6H(6(l)) + 15/2 O(2(g)) to 6CO(2(g)) + 3H2O(...

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  19. Although the dissolution of ammonium chloride in water is an endotherm...

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  20. For the precipitation reaction of Ag^(+) ions with NaCl, which of the ...

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