Home
Class 12
CHEMISTRY
For a sample of perfect gas when its pre...

For a sample of perfect gas when its pressure is changed isothermally from `p_(i)` to `p_(f)` , the entropy change is given by

A

`DeltaS=RT 1n(P_i/P_f)`

B

`DeltaS=nR 1n(P_f/P_i)`

C

`DeltaS=nR 1n(P_i/P_f)`

D

`DeltaS=nRT 1n(P_f/P_i)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|25 Videos

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    TARGET PUBLICATION|Exercise CRITICAL THINKING|95 Videos

  • CHEMICAL KINETICS

    TARGET PUBLICATION|Exercise Evaluation test|13 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    TARGET PUBLICATION|Exercise 7|3 Videos

Similar Questions

Explore conceptually related problems

For a sample of n mole of a perfect gas at constant temperature T (K) when its volume is changed from V_1 to V_2 the entropy change is given by

The change in entropy when the pressure of perfect gas is changed isothermally from P_1 to P_2 is

4g of he gas is expanded isothermally at 300K from litre to 10L. The molar change in entropy is:

One mole of a perfect gas expands isothermally to ten times its original volume. The change in entropy is

Graphically shoe the total work done in an expansion when the state of an ideal gas is changed reversibly and isothermally from (p_(i), V_(i)) to (p_(f), V_(f)) . With the help of a pV plot compare the work done in the above case with that carried out against a constant pressure p_(f) .

TARGET PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS -COMPETITIVE THINKING
  1. One mole of water at 100^@C is converted into steam at 100^@C at a con...

    Text Solution

    |

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

    Text Solution

    |

  3. For a sample of perfect gas when its pressure is changed isothermally ...

    Text Solution

    |

  4. The standard entropies of CO(2(g)), C((s)), and O(2(g)) are 213.5, 5.7...

    Text Solution

    |

  5. Considering entropy (S) as a thermodynamics parameter, the criterion f...

    Text Solution

    |

  6. The criterion for a spontaneous process is

    Text Solution

    |

  7. Adsorpton of gases on solid surface is generally exothermic because :

    Text Solution

    |

  8. Ice and water are at equilibrium at 0^@C , DeltaH=4 kJ/mol for the pro...

    Text Solution

    |

  9. Which of the following statements of correct for the spontaneous adsop...

    Text Solution

    |

  10. The correct thermodnamic conditions for the spontaneous reaction at al...

    Text Solution

    |

  11. An endotthermic reaction is non-spontaneous at freezing point of water...

    Text Solution

    |

  12. The standard enthalpy or the decomposition of N2 O5 to NO2 is 58.04 kJ...

    Text Solution

    |

  13. For the reaction Ag(2)O(s)rarr 2Ag(s)+1//2O(2)(g) the value of Delta H...

    Text Solution

    |

  14. At what temperature, a reaction will be at equilibrium at 1 atm if Del...

    Text Solution

    |

  15. The values of DeltaH and Delta S of a certain reaction are -400 kJ mol...

    Text Solution

    |

  16. Which of the following statements is correct for a reversible process ...

    Text Solution

    |

  17. If K gt 1.0, then the value of DeltaG^@ will be .

    Text Solution

    |

  18. Using the Gibbs energy change, Delta G^(@)=+ 63.3 kJ, for the followin...

    Text Solution

    |

  19. For the reaction: X(2)O(4)(l)rarr2XO(2)(g) DeltaU=2.1 cal , DeltaS...

    Text Solution

    |

  20. Entropy of a perfect crystalline solid at absolute zero is

    Text Solution

    |