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For which of the following cases is De...

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

A

adiabatic process

B

a process for which `DeltaC_(P)=0`

C

an isothermal reversible phase change

D

a process at constant pressure.

Text Solution

Verified by Experts

The correct Answer is:
C
For an isothermal reversible phase transition
`DeltaS=(DeltaH)/(T)`.
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The thermodynamic property that measures the extent of molecular disorder is called entropy. Entropy change of phase transformation can be calculated using Trouton's formula (DeltaS = DeltaH//T) . In the reversible adiabatic process, however, DeltaS will be zero. the rise in temperature in isobaric and isochoric conditions is found to increase the randomness or entropy of the system. DeltaS = 2.303 C log (T_(1)//T_(2)) For which of the following cases, DeltaS = (DeltaH)/(T) ?

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For which of the following change DeltaH ne DeltaE ? (Where DeltaH is change in enthaply , DeltaE is change in internal energy ).

For which of the following process abs(DeltaH)ltabs(DeltaE) :

In which one of the following cases, Delta H and DeltaU are not equal to each other?

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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. For the reversible process, the value of DeltaS is given by the expres...

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  2. In any natural process

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

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

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

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  6. Which of the following has highest entropy?

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

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

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

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  10. Which one of the following is correct ?

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

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

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

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

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  15. At 27^(@)C for reaction, C(6)H(6)(l)+(15)/(2)O(2)(g)to6CO(2)(g)+3H(2...

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

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  17. Which of the following expression defines the physical significance of...

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  18. A gas is allowed to expand reversibly under adiabatic conditions. What...

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  19. The hypothetical gaseous reaction A+B to AB

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  20. For a process H(2)O(s) rarr H(2)O(l) at 273 K

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