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A process is spontaneous at all temperat...

A process is spontaneous at all temperatures when 

A

`DeltaH=-ve, DeltaS =-ve`

B

`DeltaH = +ve, DeltaS = -ve`

C

`DeltaH =-ve, DeltaS = +ve`

D

`DeltaH = +ve,DeltaS = +ve`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-OBJECTIVE EXERCISE - 1 (ENTORPY AND GIBBS ENERGY)
  1. Some statements are given with regard to entropy. The incorrect statem...

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

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  3. A process is spontaneous at all temperatures when

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  4. 2H(2(g)) + O(2(g)) rarr 2H(2)O((l)) , DeltaH= -ve and DeltaG= -ve. The...

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

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

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

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

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  9. A chemical reaction cannot occur at all if its

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

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

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

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

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  14. The favourable conditions for a spontaneous reaction are

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

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

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

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

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  19. Which one of the following has Delta S^(0) greater than zero?

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  20. What of the following relationship is correct?

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