Home
Class 12
CHEMISTRY
If an endothermic reaction occurs sponta...

If an endothermic reaction occurs spontaneously at constant `T` and `P`, then which of the following is true

A

`DeltaGgt0`

B

`DeltaHgt0`

C

`DeltaSgt0`

D

`DeltaSlt0`

Text Solution

Verified by Experts

The correct Answer is:
C

Since reaction is endothermic, `DeltaH=+ve`. For the reaction to spontaneous, `DeltaG=-ve`. But `DeltaG=DeltaH-TDeltaS`. For `DeltaG` to be `-ve`, `DeltaS` mus be `+ve` i.e. `DeltaS gt 0`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Additional Numerical Problems For Practice|16 Videos
  • CHEMISTRY IN EVERY DAY LIFE

    DINESH PUBLICATION|Exercise Unit test-9|50 Videos

Similar Questions

Explore conceptually related problems

A reaction occurs spontaneously if

A reaction occurs spontaneously if:

For an endothermic reaction to be spontaneous

If an eddothermic reaction occurs spontaneously at constant temperature and pressure, then which of the following is true?

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. How many calories are required to heat 40 g of argon from 40^(@)C to 1...

    Text Solution

    |

  2. If one mole of ammonia and one mole of hydrogen chloride are mixed in ...

    Text Solution

    |

  3. If an endothermic reaction occurs spontaneously at constant T and P, t...

    Text Solution

    |

  4. 4.48 L of an ideal gas at STP requires 12 cal to raise its temperature...

    Text Solution

    |

  5. Change in internal energy when 4 kJ of work is done on the system and ...

    Text Solution

    |

  6. Which of the ions in the table below would have the largest value of e...

    Text Solution

    |

  7. A piece of ice kept at room temperature melts of its own. This reactio...

    Text Solution

    |

  8. A pressure cooker reduces cooking time because

    Text Solution

    |

  9. Calculate the work invoved when 1 mol of an ideal gas is compressed r...

    Text Solution

    |

  10. The enthalpy of neutralization of oxitic acid by strong acid is 25.4 k...

    Text Solution

    |

  11. An endothermic reaction has a positive internal energy change DeltaU. ...

    Text Solution

    |

  12. The reaction A to B , DeltaH=+24 kJ//"mole". For the reaction B to C, ...

    Text Solution

    |

  13. For a chemical reaction, DeltaG will always be negative if,

    Text Solution

    |

  14. In which reaction there will be increase in entropy ?

    Text Solution

    |

  15. A chemical reaction cannot occur at all if its

    Text Solution

    |

  16. Rate of a reaction can be expressed by Arrhenius equation as: k = Ae...

    Text Solution

    |

  17. BaSO(4) is insoluble in water due to its

    Text Solution

    |

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

    Text Solution

    |

  19. Calculate DeltaH^(@) for the reaction Na(2)O(g)+SO(3)(g)toNa(2)SO(4)...

    Text Solution

    |

  20. For the reaction N(2)(g)+3H(2)(g)to2NH(3)(g), which of the following...

    Text Solution

    |