Home
Class 11
CHEMISTRY
In an irreversible process taking place ...

In an irreversible process taking place at constant `T` and `P` and in which only pressure-volume work is being done, the change in Gibbs free energy `(dG)` and the change in entropy `(dS)` satisfy the criteria

A

`(dS)_(V,U)=0,(dG)_(T,P)=0`

B

`(dS)_(V,U)=0,(dG)_(T,P)=+ve`

C

`(dS)_(V,U)=-ve,(dG)_(T,P)=-ve`

D

`(dS)_(V,U)=+ve,(dG)_(T,P)=-ve`

Text Solution

Verified by Experts

The correct Answer is:
d

For a spontaneous change (work is beign done by the system) `(dG)_(T,P)=-ve` and `(dS)_(V,U)=+ve`
Promotional Banner

Topper's Solved these Questions

  • THERMOCHEMISTRY

    P BAHADUR|Exercise Exercise 9 Advance numerical problems|31 Videos

Similar Questions

Explore conceptually related problems

In an irreversible process taking place at constant P and T in which only pressure volume work is being done by the system the change in Gibb's energy (DeltaG) and change in entropy (Delta) , satisfy the criterion:

Products are favored in a chemical reaction taking place at a constant temperature and pressure. Consider the following statements : (i) The change in Gibbs energy for the reaction is negative. (ii) the total change in Gibbs energy for the reaction and the surroundings is negative. (iii) The change in entropy for the reaction is positive. (iv) The total change in entropy for the reaction and the surrounding is positive. The statments which are ALWAYS true are :

Statement: The thermodynamics functions which determines the spontaneity of a process is the free energy. For a process to be spontaneous, the change in free energy must be negative. Explanation:The change in free energy is related to the change in enthalpy and change in entropy. the change in entropy for a process must be always positive if it is spontaneous.

A reversible heat engine carries 1 mole of an ideal monatomic gas aroung the cycle 1-2-3-1. Process 1-2 takes place at constant volume, process 2-3 take place at constant volume, process 2-3 is adiabatic, and process 3-1 takes place at constant pressure. Complete the values for the heat Delta Q , the change in internal energy Delta U , and the work done Delta , for each of the three processes and for the cycle as a whole.

P BAHADUR-THERMODYNAMICS-Exercise
  1. An endotthermic reaction is non-spontaneous at freezing point of water...

    Text Solution

    |

  2. A heat engine absorbs heat Q(1) at temperature T(1) and Q(2) at temper...

    Text Solution

    |

  3. In an irreversible process taking place at constant T and P and in whi...

    Text Solution

    |

  4. The internal energy change when a system goes fromk state A to B is 40...

    Text Solution

    |

  5. The correct relationship between free energy change in a reaction and ...

    Text Solution

    |

  6. An ideal gas expands from 1xx10^(-3)m^(3) to 1xx10^(-2)m^(3) at 300K a...

    Text Solution

    |

  7. For a spontaneous reaction, DeltaG , equilibrium constant (K) and E(ce...

    Text Solution

    |

  8. An ideal gas is allowed to expand both reversibly and irreversibly in ...

    Text Solution

    |

  9. In conversion of lime-stone to lime, CaCO(3(s)) to CaO((s)) + CO(2(g...

    Text Solution

    |

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

    Text Solution

    |

  11. Which one of the following statement is false?

    Text Solution

    |

  12. In thermodynamics, a process is called reversible when

    Text Solution

    |

  13. One mole of a non-ideal gas undergoes a change of state (2.0atm,3.0L,9...

    Text Solution

    |

  14. Two moles of an ideal gas expanded isothermally and reversibly from 1L...

    Text Solution

    |

  15. The enthalpy of vaporisation of a liquid is 30 kJ mol^(-1) and entropy...

    Text Solution

    |

  16. When 1mol of a monoatomic ideal gas at TK undergoes adiabatic change u...

    Text Solution

    |

  17. The direct conversion of A to B is difficult, hence it is carried out ...

    Text Solution

    |

  18. For the process H(2)O(l) (1 "bar", 373 K) rarr H(2)O(g) (1"bar", 373 K...

    Text Solution

    |

  19. For a particular reversible reaciton at temperature T, DeltaH and Delt...

    Text Solution

    |

  20. The species which by definition has zero standard molar enthalpy of fo...

    Text Solution

    |