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 change in entropy (ds), satisfy the criteria

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

For an irreversible process, the value of dS is greater than zero.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    BRILLIANT PUBLICATION|Exercise LEVEL-II|102 Videos
  • CHEMICAL THERMODYNAMICS

    BRILLIANT PUBLICATION|Exercise LEVEL-II (Assertion-Reason Type)|18 Videos
  • CHEMICAL THERMODYNAMICS

    BRILLIANT PUBLICATION|Exercise LEVEL-III|52 Videos
  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    BRILLIANT PUBLICATION|Exercise QUESTION (LEVEL -ll)|42 Videos
  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-III ( Linked Comprehension Type ))|12 Videos

Similar Questions

Explore conceptually related problems

a) In a process 701 J of heat is absorbed by a system and 394 J of work is done by the system. What is the change in internal energy for the process? b) What is free expansion? What is the work done during free expansion of an ideal gas?

Thermodynamic process differ based on the manner in which it is carried out. a) Distinguish between reversible and irreversible processes. b) Calculate the amount of work done when 2 moles of a gas expands from a volume of 2 L to 6 L isothermally and irreversibly against a constant external pressure of 1 atm.

Thermodynamics deals with energy changes of macroscopic system. a) Consider a chemical reaction taking place in a closed insulated vessel. To which type of thermodynamic system does it belong? b) State the first law of thermodynamics. c) 3 mol of an ideal gas at 1.5 atm and 25^oC expands isothermally in a reversible manner to twice its original volume against an external pressure of 1 atm. Calculate the work done. [R = 8.314 JK^-1mol^-1]

Most of the naturally occurring processes are spontaneous. a) Give the criteria for spontaneity of a process in terms of free energy change ( DeltaG ) b) Exothermic reactions associated with a decrease in entropy are sponaneous at lower temperatures. Justify on the basis of Gibbs equation. c) Find the temperature above which the reactin MgO_((s))+C_((s))rightarrow Mg_((s))+CO_((g)) becomes spontaneous. (Given ( Delta_rH^theta=490kJmol^-1 & Delta_rS^theta=198JK mol^-1 )

BRILLIANT PUBLICATION-CHEMICAL THERMODYNAMICS -LEVEL-I
  1. What is the molar heat capacity of ethyl alcohol, C (2) H (5) OH, in u...

    Text Solution

    |

  2. If at 298 K the bond enèrgies of C-H, C-C, C=C and H - H are respectiv...

    Text Solution

    |

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

    Text Solution

    |

  4. Oxygen gas weighing 64 g is expanded from 1 atm to 0.25 atm at 30^(@)C...

    Text Solution

    |

  5. For the process H (2) O (l) ⇔H (2) O (g) at T = 100 ^(@)C and 1 atmosp...

    Text Solution

    |

  6. The enthalpy of a reaction at 273 K is-4.58 kJ. What will be the entha...

    Text Solution

    |

  7. The gas absorbs 150 J heat and is simultaneously compressed by a const...

    Text Solution

    |

  8. The densities of graphite and diamond at298K are 2.25gcm and 3.31 gcm^...

    Text Solution

    |

  9. Consider 100 mL of a liquid contained in an isolated container at a pr...

    Text Solution

    |

  10. Consider the given reaction 2 CO + O (2) to 2 CO (2) , Delta H =-560 ...

    Text Solution

    |

  11. Nitrogen dioxide, NO(2) an air pollutant, dissolves in rain-water to ...

    Text Solution

    |

  12. The standard Gibbs energy change for a reaction isDelta G ^(@) =- 41.8...

    Text Solution

    |

  13. The enthalpy change for a reaction does not depend upon

    Text Solution

    |

  14. For a spontaneous reaction, the DeltaG, equilibrium constant (K) and E...

    Text Solution

    |

  15. In a fuel cell, methanol is used as fuel and oxygen gas is used as an ...

    Text Solution

    |

  16. Calculate the equilibrium constant for the the reaction given below at...

    Text Solution

    |

  17. Which of the following equations corresponds to the definition of stan...

    Text Solution

    |

  18. Molar heat capacity of water in equilibrium with ice at constant press...

    Text Solution

    |

  19. Standard molar enthalpy of formation of CO(2) is equal to

    Text Solution

    |

  20. When an ideal diatomic gas is heated at constant pressure, the fractio...

    Text Solution

    |