Home
Class 11
CHEMISTRY
The enthalpy of the reaction H(2)(g)+(...

The enthalpy of the reaction
`H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(g)` is `DeltaH_(1)` and that of `H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l)` is `DeltaH_(2)`. Then

Text Solution

Verified by Experts

Reaction (ii) will have larger value of `DeltaH` because when `H_(2)O(g)` condenses to form `H_(2)O(l)` some heat is evolved (called enthalpy of condensation).Therefore, the total heat evolved becomes large.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Conceptual Questions - 3|18 Videos

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise NCERT Textbook Exercises|15 Videos

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Conceptual Questions -1|19 Videos

  • STRUCTURE OF ATOM

    MODERN PUBLICATION|Exercise Unit Practice Test|13 Videos

Similar Questions

Explore conceptually related problems

H_(2)O(g)+(1)/(2)O_(2)(g)toH_(2)O(g)," "DeltaH=x H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l)," "DeltaH=y heat of vaporization of water is:

H_(2)(g)+(1)/(2)O_(2)(g)rarr2H_(2)O(l), DeltaH =- 286 kJ 2H_(2)(g)+O_(2)(g)rarr2H_(2)O(l)……………kJ(+-?)

The enthalpy of vaporisation of liquid water using the data H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l) , DeltaH=-285.77 kJ//mol H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(g) , DeltaH=-241.84 kJ//mol

MODERN PUBLICATION-THERMODYNAMICS-Conceptual Questions - 2
  1. Will the heat released be same or different in the following two react...

    Text Solution

    |

  2. out of carbon (diamond)and carbon (graphite), whose enthalpy of format...

    Text Solution

    |

  3. What is the basis of Hess's law of heat summation?

    Text Solution

    |

  4. Which of the following state of bromine will have standard heat forma...

    Text Solution

    |

  5. A system is changed from an initial state by a manner so that DeltaH =...

    Text Solution

    |

  6. Given that : O(g) + e^(-) to O^(-)(g) DeltaH = -142 kJ "mol"^(-1) ...

    Text Solution

    |

  7. Can enthalpy of combustion be positive?

    Text Solution

    |

  8. The heat of formation of Fe(2)O(3)(s) is -824.0 kJ.What will be the De...

    Text Solution

    |

  9. The enthalpy of formation of gaseous iodine is 62.5 kJ "mol"^(-1). Wh...

    Text Solution

    |

  10. The standard enthalpy of formation of H(2)O(l) and H(2)O(g) are -285.8...

    Text Solution

    |

  11. Write an expression in the form of a chemical equation of the standard...

    Text Solution

    |

  12. N(2)(g) + 3H(2)(g) to 2NH(3)(g) Delta(r)H^(@) = -92.4 kJ What is the...

    Text Solution

    |

  13. The enthalpy of the reaction H(2)(g)+(1)/(2)O(2)(g)toH(2)O(g) is Del...

    Text Solution

    |

  14. One kilogram of graphite is burnt in a closed vessel.The same amount o...

    Text Solution

    |

  15. If enthalpy of fusion and enthalpy of vaporisation of sodium metal are...

    Text Solution

    |

  16. When is bond dissociation enthalpy equal to bond enthalpy?

    Text Solution

    |

  17. At 1 atm will the Delta(f)H^(@) be zero for CI(2)(g) and Br(2)(g)? Exp...

    Text Solution

    |