Home
Class 12
CHEMISTRY
The DeltaH(f)^(@) for CO(2)(g), CO(g) an...

The `DeltaH_(f)^(@)` for `CO_(2)(g)`, CO(g) and `H_(2)O(g)` are `-395.5,-110.5` and `-241.8" kJ" mol^(-1)` respectively. The standard enthalpy change in (in kJ) for the reaction
`CO_(2)(g)+H_(2)(g)toCO(g)+H_(2)O(g)` is

A

524.1

B

41.2

C

`- 262.5`

D

`- 41.2`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH=SigmaDeltaH, "(Product)"-SigmaDeltaH`,
`"(reactant)"=(-110.5-241.08)-(-393.5)=41.2 kJ mol^(-1)`.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise JEE section (More than one choice correct answer)|15 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise JEE section (Reasoning type questions)|6 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise Critical Thinking (Objective Questions)|63 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise JEE Section (Matrix Match type questions)|3 Videos
ERRORLESS -THERMODYNAMICS AND THERMOCHEMISTRY -JEE section (Only one correct answer)
  1. The enthalpy of dissolution of BaCl(2)(s) and BaCl(2).2H(2)O are -20.6...

    Text Solution

    |

  2. Delta G^(@) for the reaction X+Y hArr Z is -4.606 kcal. The value of e...

    Text Solution

    |

  3. The DeltaH(f)^(@) for CO(2)(g), CO(g) and H(2)O(g) are -395.5,-110.5 a...

    Text Solution

    |

  4. For the reaction N(2)+3H(2)hArr2NH(3), DeltaH=?

    Text Solution

    |

  5. In thermodynamics, a process is called reversible when

    Text Solution

    |

  6. Which one of the following statements is false

    Text Solution

    |

  7. One mole of non - ideal gas undergoes a change of state (2.0 atm , 3 ....

    Text Solution

    |

  8. Which of the following defines DeltaH(f)^@ ?

    Text Solution

    |

  9. The enthalpy of vaporisation of a liquid is 30 kJ mol^(-1) and entropy...

    Text Solution

    |

  10. Adsorpton of gases on solid surface is generally exothermic because :

    Text Solution

    |

  11. Two moles of an ideal gas is expanded isothermally and reversibly from...

    Text Solution

    |

  12. The rusting of iron takes place as follows : 2H^(o+)+2e^(-) +(1)/(2...

    Text Solution

    |

  13. When 1mol of a monoatomic ideal gas at TK undergoes adiabatic change u...

    Text Solution

    |

  14. For the reaction, 2CO + O(2) to 2CO(2), DeltaH = -560 kJ. Two moles of...

    Text Solution

    |

  15. The direct conversion of A to B is difficult. Hence it is carried out ...

    Text Solution

    |

  16. For the process H(2)O(l) (1 "bar", 373 K) rarr H(2)O(g) (1"bar", 373 K...

    Text Solution

    |

  17. The value of 1og(10) K for a reaction AhArrB is: (Given, Delta(r)H(2...

    Text Solution

    |

  18. The species which by definition has zero standard molar enthalpy of fo...

    Text Solution

    |

  19. The bond energy (in kcal mol^(-1)) of a C -c single bond is approximat...

    Text Solution

    |

  20. Using the data provided, calculate the multiple bond energy (kJ mol^(-...

    Text Solution

    |