Home
Class 12
CHEMISTRY
The enthalpy change DeltaH for the neutr...

The enthalpy change `DeltaH` for the neutralisation fo `1M HCI` by caustic potash in dilute solution at `298 K` is

A

68 kJ

B

65 kJ

C

57.3 kJ

D

50 kJ

Text Solution

Verified by Experts

The correct Answer is:
C
HCl and KOH both are strong.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise ORDINARY THINKING (Objective Questions) Bond energy|15 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise ORDINARY THINKING (Objective Questions) Free energy and Work function|57 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise ORDINARY THINKING (Objective Questions) First law of thermodynamics and Hess law|100 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise JEE Section (Matrix Match type questions)|3 Videos

Similar Questions

Explore conceptually related problems

For the neutralisation of 1 mol of H_(2)SO_(4) with 2 mols of NaOH in dilute solutions the heat evolved is

The enthalpy change (Delta H) for the reaction N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g) is -92.38 kJ at 298 K . What is Delta U at 298 K ?

Enthalpy of neutralzation is defined as the enthalpy change when 1 mole of acid / / base is completely neutralized by base // acid in dilute solution . For Strong acid and strong base neutralization net chemical change is H^(+) (aq)+OH^(-)(aq)to H_(2)O(l) Delta_(r)H^(@)=-55.84KJ//mol DeltaH_("ionization")^(@) of aqueous solution of strong acid and strong base is zero . when a dilute solution of weak acid or base is neutralized, the enthalpy of neutralization is somewhat less because of the absorption of heat in the ionzation of the because of the absorotion of heat in the ionization of the weak acid or base ,for weak acid /base DeltaH_("neutrlzation")^(@)=DeltaH_("ionization")^(@)+ Delta _(r)H^(@)(H^(+)+OH^(-)to H_(2)O) If enthalpy of neutralization of CH_(3)COOH by NaOH is -49.86KJ // mol then enthalpy of ionization of CH_(3)COOH is:

The enthalpy change for a given reaction at 298 K is -x cal mol^(-1) . If the reaction occurs spontaneously at 298 K , the entropy change at that temperature

The enthalpy change (DeltaH) for the reaction, NH_(2(g))+3H_(2(g)) rarr 2NH_(3g) is -92.38kJ at 298K What is DeltaU at 298K ?

The enthalpy change for first proton neutralisation of H_(2)S is -37.1kJ mol^(-1) . What is the enthalpy change for first ionisation of H_(2)S .

ERRORLESS -THERMODYNAMICS AND THERMOCHEMISTRY -ORDINARY THINKING (Objective Questions) Heat of reaction
  1. If S+O(2)rarrSO(2),(DeltaH=-298.2) SO(2)+(1)/(2)O(2)rarrSO(3),(Del...

    Text Solution

    |

  2. For the allotropic change represented by equation C(diamond) rarr C(gr...

    Text Solution

    |

  3. The enthalpy change DeltaH for the neutralisation fo 1M HCI by caustic...

    Text Solution

    |

  4. A reaction that takes place with the absorption of energy is

    Text Solution

    |

  5. A solution of 500 ml of 0.2 M KOH and 500ml of 0.2 M HCl is mixed and ...

    Text Solution

    |

  6. In which of the following reaction does the heat change represent the ...

    Text Solution

    |

  7. The heat of formations of CO((g)) and CO(2(g)) are -26.4 kcal and -94....

    Text Solution

    |

  8. In the complete combustion of butanol C(4)H(9)OH(l), if Delta H is ent...

    Text Solution

    |

  9. The heat of combustion of CH(4)(g), C (graphite), H(2)(g) are 20kcal, ...

    Text Solution

    |

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

    Text Solution

    |

  11. When a strong acid, strong base or their salt are dissolved in water, ...

    Text Solution

    |

  12. 2.1g of Fe combines with S evolving 3.77KJ . The heat of formation of...

    Text Solution

    |

  13. Which compound will absorb the maximum amount of heat when dissolved i...

    Text Solution

    |

  14. In the reaction C+2SrarrCS(2)+DeltaH, DeltaH is the

    Text Solution

    |

  15. The following thermochemical reactions are given : M+(1)/(2)O(2)to M...

    Text Solution

    |

  16. A cylinder of gas is assumed to contain 11.2 kg of butane (C(4)H(10))....

    Text Solution

    |

  17. Thermodynamically the most stable form of carbon is

    Text Solution

    |

  18. Which of the following is an example of endothermic reaction

    Text Solution

    |

  19. The mutual heat of neutralisation of 40 g NaOH and 60CH(3)COOH will be

    Text Solution

    |

  20. The heats evolved in combustion of rhombic and monoclinic sulphur are,...

    Text Solution

    |