Home
Class 12
CHEMISTRY
At 25^(@)C, when 0.5 mol of HCl reacts c...

At `25^(@)C`, when 0.5 mol of HCl reacts completely with 0.5 mol of NaOH in a dilute solution, 28.65 kJ of heat is liberated. If at `25^(@)C" "DeltaH_(f)^(0)[H_(2)O(l)]=-285.8kJ*mol^(-1),` then `DeltaH_(f)^(0)OH^(-)(aq) ` is-

A

`-314.45kJ*mol^(-1)`

B

`-228.5kJ*mol^(-1)`

C

`-257.15kJ*mol^(-1)`

D

`-343.1kJ*mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise VERY SHORT TYPE QUESTIONS|53 Videos
  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise FILL IN THE BLANKS|23 Videos
  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK|53 Videos
  • CHEMICAL KINETICS

    CHHAYA PUBLICATION|Exercise EXERCISE (NUMERICAL PROBLEMS)|37 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    CHHAYA PUBLICATION|Exercise PRACTICE SET 15|15 Videos
CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-MCQ HOTSPOT (SINGLE CORRENT TYPE)
  1. If at normal pressure and 100^(@)C the changes in enthalpy and entropy...

    Text Solution

    |

  2. At 25^(@)C, the standard heat of formation for Br(2)(g) is 30.9kJ*mol^...

    Text Solution

    |

  3. At 25^(@)C, when 0.5 mol of HCl reacts completely with 0.5 mol of NaOH...

    Text Solution

    |

  4. On combustion C(x)H(y)(l) forms CO(2)(g) and H(2)O(l). At a given temp...

    Text Solution

    |

  5. An ideal gas is compressed isothermaly at 25^(@)C from a volume of 10 ...

    Text Solution

    |

  6. At 27^(@)C, for the reaction aA(g)+B(g)to2C(g),PDeltaV=-2.5kJ. The val...

    Text Solution

    |

  7. When 1 mol of an ideal gas is compressed in a reversible isothermal pr...

    Text Solution

    |

  8. For 0.5 mol of an ideal gas, 15 cal of heat is required to raise its t...

    Text Solution

    |

  9. 1 mol of an ideal gas is enclosed in a cylinder fitted with a friction...

    Text Solution

    |

  10. Given (at 25^(@)C): Ca(s)+(1)/(2)O(2)(g)toCaO(s),DeltaH^(0)=-635.2kJ...

    Text Solution

    |

  11. Given (at 25^(@)C): 2FeSO(4)(s)toFe(2)O(3)(s)+SO(2)(g)+SO(3)(g),Delt...

    Text Solution

    |

  12. At 25^(@)C, the standard heats of formation of H(2)O(g),H(2)O(g),H(g) ...

    Text Solution

    |

  13. Given (at 25^(@)C): C(s, graphite)+(1)/(2)O(2)(g)toCO(g),DeltaH^(0)=...

    Text Solution

    |

  14. At 25^(@)C, for the reaction, H^(+)(aq)+OH^(-)(aq)toH(2)O(l),DeltaH^(0...

    Text Solution

    |

  15. The temperature of a bomb calorimeter changes from 25^(@)C to 32.7^(@)...

    Text Solution

    |

  16. In which of the following processes the change in entropy for the syst...

    Text Solution

    |

  17. A system undergoes the process: A to B to C to D. In this process, the...

    Text Solution

    |

  18. At 27^(@)C,DeltaH=+6kJ for the reaction A+2Bto3C. In the reaction, if ...

    Text Solution

    |

  19. An LPG cylinder contains 14 kg of butane. A family requires 2xx10^(4)k...

    Text Solution

    |

  20. For a reaction involving 1 mol of Zn and 1 mol of H(2)SO(4) in a bomb ...

    Text Solution

    |