Home
Class 11
CHEMISTRY
H (2 ) + 1/2 O (2) to H (2) O, Delta H =...

`H _(2 ) + 1/2 O _(2) to H _(2) O, Delta H =- 68` kcal
`K + H _(2) O + aq to KOH _((aq)) + (1)/(2) H _(2) , Delta H =- 48` kcal
`KOH + aq to KOH _((aq)) , Delta H =- 14 `kcal
From the above data `Delta H _((f))`of KOH in kcal is

A

`-130`

B

`130`

C

`+102`

D

`-102`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND CHEMICAL ENERGETICS

    BRILLIANT PUBLICATION|Exercise (LEVEL-II (HOMEWORK)|39 Videos
  • STRUCTURE OF ATOMS

    BRILLIANT PUBLICATION|Exercise LEVEL - III (Linked Comprehension Type)|8 Videos

Similar Questions

Explore conceptually related problems

H _(2) to 2H, Delta H = 430 kJ F _(2) to 2F, Delta H= 148 kJ 2 HF to H _(2) + F _(2) , Delta H = 530 kJ Bond energy of HF bond is

BRILLIANT PUBLICATION-THERMODYNAMICS AND CHEMICAL ENERGETICS - (LEVEL-II (HOMEWORK)
  1. Delta H (f) ^(0) values of NH (2) - OH ((s)), NH (3 (g)), N (2) H (4 ...

    Text Solution

    |

  2. A cylinder of cooking gas is assumed to contain 14.2 kg butane (C(4)H(...

    Text Solution

    |

  3. H (2 ) + 1/2 O (2) to H (2) O, Delta H =- 68 kcal K + H (2) O + aq t...

    Text Solution

    |

  4. The standard enthalpies of combustion of C(2) H(5) (g) and ethanol are...

    Text Solution

    |

  5. Delta H (f) ^(0) of H (2) O , CO (2) and sucrose (C(12)H(22)O(11)) are...

    Text Solution

    |

  6. When 0.2 g of 1-butanol was burnt in a suitable apparatus, the heat ev...

    Text Solution

    |

  7. The specific heat at constant volume and constant pressure for a gas a...

    Text Solution

    |

  8. One mole of an ideal gas is allowed to expand reversibly and adiabatic...

    Text Solution

    |

  9. 1.22 g of benzoic acid on combustion in a Bomb calorimeter was found t...

    Text Solution

    |

  10. 200 ml 0.1 M H(2) SO(4) is mixed with 200 ml 0.2 M NaOH. The heat gen...

    Text Solution

    |

  11. In experiment I 200 ml 0.1 M NaOH is mixed with 100 ml 0.1 M H(2) SO(...

    Text Solution

    |

  12. The enthalpies of solution for copper sulphate pentahydrate and anhydr...

    Text Solution

    |

  13. Enthalpy of vaporisation of benzene is 30.8 kJ mol" at its normal boil...

    Text Solution

    |

  14. C C l(4 (f)) boils at 350 K at 1 atm. pressure absorbing 30 kJ mol^(-...

    Text Solution

    |

  15. Consider the reaction 4NO(2(g)) + O (2 (g)) to 2 N (2 ) O (5(g)) , D...

    Text Solution

    |

  16. 0.8 mole He and 0.2 mole H, maintained at same pressure are isothermal...

    Text Solution

    |

  17. For the reaction X (2) O (4 (l)) to 2 XO (2 (g)) , Delta u = 2.1 kcal ...

    Text Solution

    |

  18. Given PbO ((s)) + C ((s)) to Pb ((s)) + CO ((g)) , Delta H = 108 kJ mo...

    Text Solution

    |

  19. A reaction has value of Delta H = -40 kcal mol^(-1) at 400 K. Below 4...

    Text Solution

    |

  20. Calculate free energy change at 27^(@)C for the reaction H (2) + Cl ...

    Text Solution

    |