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A spontaneous change is one in which a s...

A spontaneous change is one in which a system under goes

A

an increase in internal energy

B

lowering in entropy

C

lowering in free energy

D

no energy change

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The correct Answer is:
C
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OP TANDON-Chemical Thermodynamics and Thermochemistry-Objective Question Level-A
  1. The enthalpy changes at 298 K in successive breaking of O-H bonds of ...

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  2. The combustion of methane is written as CH(4)(g)+2O(2)(g)toCO(2)(g)+...

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  3. A spontaneous change is one in which a system under goes

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  4. In which of the following change entropy decreases?

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  5. For the percipitation reaction of Ag^(o+) ions with NaCI, which of the...

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  6. If the enthalpy of vaporisation of water is 186.5 J mol^(-1), then ent...

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  7. A reaction is non-spontaneous when:

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  8. Standard entropy of X(2) , Y(2) and XY(3) are 60, 40 and 50JK^(-1)mol...

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  9. The unit of entropy is

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  10. Given that Deltah(f)(H)=218 kJ//mol. Express the H-H bond energy in K ...

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  11. For which reaction from the following, DeltaS will be maximum?

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  12. A particular reaction at 27^(@)C for which DeltaH gt 0 and DeltaS gt 0...

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  13. Althought he dissolution of ammonium chloride in water is an endotherm...

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  14. In general, for exothermic reactions to be spontaneous

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

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  16. In an electrochemical cell, if E^(@) is the e.m.f. of the cell involvi...

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  17. The standard Gibb's free energy change, DeltaG^(@) is related to equil...

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  18. The value of entropy in the universe is

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  19. Which of the following thermodynamic relation is correct?

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  20. The enthalpy of formation for C(2)H(4)(g), CO(2)(g) and H(2)O(l) at 25...

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