Home
Class 11
CHEMISTRY
Calculate the change in enthalpy ,DeltaH...

Calculate the change in enthalpy ,`DeltaH`, for the combustion of 11.2 L of hydrogen gas , measured at `0^(@)C` and 1 atm pressure , to orm `H_(@)O(g)`:
`{:(DeltaH_(f)^(@),(KJ.mol^(-1))),(H_(2)O(g),-241.8):}`

A

`-60.5KJ`

B

`-121KJ`

C

`-484KJ`

D

`-271.8KJ`

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • SALT ANALYSIS

    GRB PUBLICATION|Exercise Subjective Type|69 Videos

Similar Questions

Explore conceptually related problems

Calculate the ethalpy of combustion of ethylene (g) to form CO_(2) (gas) and H_(2)O (gas) at 298 K and 1 atmospheric pressure. The enthalpies of formation of CO_(2),H_(2)O and C_(2)H_(4) are -393.7, -241.8+52.3 kJ per mole respectively.

Calculate the standard enthalpy of formation of acetylena from the following data: C(s)+O_(2)(g)to CO_(2)(g), DeltaH^(@)=-393.5KJmol^(-1) H_(2)(g)+(1)/(2)O_(2)(g)to H_(2)O(l),DeltaH^(@)=-285 .8KJmol^(-1) 2C_(2)H_(2)(g)+50_(2)(g)to 4Co_(2)(g)+2H_(2)O(l0, DeltaH^(@)=-2598.8KJmol^(-1)

Calculate DeltaH^(@) for the reaction : TiCl_(4)(g)+2H_(2)O(l)to TiO_(2)(s)+4Hcl(g) {:(DeltaH_(f)^(@),(KJ.mol,^(-1))),(TiCl_(4)(g),-763),(H_(2)O(l),-286),(TiO_(2)(s),-945),(HCl(g),-92):}

Diborane is a potential rocket fuel which undergoes combustion according to the equation B_2H_6(g)+3O_2(g)toB_2O_3(s)+3H_2O(g) Calculate the enthalpy change for the combustion of diborane. Given (i) 2B(s)+3/2O_2(g)toB_2O_3(s), DeltaH=-1273 kj per mol (ii) H_2(g)+1/2O_2(g)toH_2O(I), DeltaH=-286 kj per mol (iii) H_2O(I)toH_2O(g), DeltaH=44 kj per mol (iv) 2B(s)+3H_2(g)toB_2H_6(g), DeltaH=36 kj per mol

GRB PUBLICATION-THERMODYNAMICS-All Questions
  1. Which equation represents the reaction for the stanard enthalpy of for...

    Text Solution

    |

  2. C(2)H(6)(g)+(7)/(2)O(2)(g)to 2CO(2)(g)+3H(2)O(g) DeltaH^(@)=-1427.7K...

    Text Solution

    |

  3. Calculate the change in enthalpy ,DeltaH, for the combustion of 11.2 L...

    Text Solution

    |

  4. Calculate DeltaH^(@) for the reaction : TiCl(4)(g)+2H(2)O(l)to TiO(2...

    Text Solution

    |

  5. Use bond energies to estimate the value of DeltaH^(@) for the reactio...

    Text Solution

    |

  6. Use the thermochemical data given to calculate Deltah(f)^(@) for N(2)...

    Text Solution

    |

  7. Which process requires the greatest amount of energy for 1 mole of H(2...

    Text Solution

    |

  8. If the circles represent molecules , which diagram provides the best m...

    Text Solution

    |

  9. Which of these coversios has a poitive DeltaS^(@)? (p)combustion of ...

    Text Solution

    |

  10. Given these reactions : Ato2B DeltaH=40KJ BtoCDeltaH=-50KJ 2CtoD ...

    Text Solution

    |

  11. Hydrazine , N(2)H(4) , contains aN-N single bond and 4N -H bonds . Use...

    Text Solution

    |

  12. Rank the enthalpy of fusion , sublimation and vaporization for water :

    Text Solution

    |

  13. The stande enthalpy of formation for NH(3)(g)is -46.1KJxxmol^(-1) .Cal...

    Text Solution

    |

  14. Which are exothrmic processes? (p) Combustion of ethane (Q)Dehyratio...

    Text Solution

    |

  15. Which sets of chemicals , when mixed , produce the observation (s) lis...

    Text Solution

    |

  16. The vapour pressure of phoshorus trichoride is100 mm Hg at 21.0^(@) an...

    Text Solution

    |

  17. Estimate the enthalpy of combustion of methane in KJ .mol^(-1) CH(4)...

    Text Solution

    |

  18. Which Statement is always true for an exothermic reaction ?

    Text Solution

    |

  19. For which reaction is DeltaH(rxn)^(@) equal to DeltaH(f)^(@) for CUSO...

    Text Solution

    |

  20. What is the value of DeltaH^(@) (inKJ) for this reaction ?ltbr gt ...

    Text Solution

    |