Home
Class 12
CHEMISTRY
Standard heat of formation of CH4(g), CO...

Standard heat of formation of `CH_4(g), CO_2(g) `and water at `25^@C` are -17.9, -94.1 K and -68.3 kcal `mol^-1` respectively. Calculate the heat change (in kcal) in the following reaction at `25^@C: `
`CH_4(g)+2O_2(g)=CO_2(g)+2H_2O(g)`

A

`-144.5`

B

`-180.3`

C

`-248.6`

D

`-212.8`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    MBD PUBLICATION|Exercise Question Bank|390 Videos

  • TRANSITION METALS (d-BLOCK ELEMENTS)

    MBD PUBLICATION|Exercise QUESTION BANK|1320 Videos

Similar Questions

Explore conceptually related problems

Select the intermediate in the following reaction mechanism: O_3(g)iffO_2(g)+O(g) O(g)+O_3(g)to2O_2

The heat of formation of CO(g) and CO 2 ​ (g) are ΔH=−110 and ΔH=−393kJmmol −1 respectively. What is the heat of reaction(ΔH) (in kJ mol −1 ) for the following reaction? CO(g)+ 1/2 ​ O 2 ​ (g)→CO 2 ​ (g)

Predict whether /_\S is +ve or -ve for the following reaction. ) 2H_(2(g))+O_(2(g))rarr2H_2O_((g))

The heat of formation of CO(g) and CO_2(g) are -26.4 kcal and -94.0 kcal respectively. Heat of combustion of carbon monoxide will be:

The standard heat of formation of NO_2(g) amd N_2O_4(g) are 8.0 2.0 kcal mol^-1 respectively. The heat of dimerization of NO_2 in kcal is:

K_p/K_c for the reaction: CO(g)+1/2O_2(g) hArr CO_2(g) is :

Heat of combustion of CH_4, C_2H_4, C_2H_6 are-890, -1411 and -1560 kJ/mol respectively. Which has the lowest calorific fuel value in kJ/g:

trianglen , the change in the number of mole for the reaction, C_12H_22O_11(s)+12O_2(g)rarr12CO_2(g)+11H_2O(l) at 25^@C is

MBD PUBLICATION-THERMODYNAMICS-Question Bank
  1. The heat of formation of CO(g) and CO 2 ​ (g) are ΔH=−110 and ΔH=−39...

    Text Solution

    |

  2. If, S+O2rarrSO2, triangleH=-298.2 kJ (i)SO2+1/2O2rarrSO3, triangleH ...

    Text Solution

    |

  3. H2(g)+Cl2(g)=2HCl(g), triangleH=-44.12 kcal The enthalpy of hydrogen ...

    Text Solution

    |

  4. H2(g)+1/2O2(g)=H2O(l), triangleH298k=-68.32 kcal. Heat of vaporisati...

    Text Solution

    |

  5. Standard heat of formation of CH4(g), CO2(g) and water at 25^@C are -1...

    Text Solution

    |

  6. Molar heat capacity is given by:

    Text Solution

    |

  7. Heat of neutralisation of a strong acid and strong base is always.

    Text Solution

    |

  8. Endothermic compounds are generally:

    Text Solution

    |

  9. The heat evolved during neutralisation is maximum in the reaction of:

    Text Solution

    |

  10. For the reaction, CaCO3(s)rarrCaO(s)+CO2(g)

    Text Solution

    |

  11. triangleH for transition of cardon in the diamond from to carbon in th...

    Text Solution

    |

  12. Which represents the largest amount of energy :

    Text Solution

    |

  13. In the combustion of hydrocarbons, triangleH is:

    Text Solution

    |

  14. For an endothermic reaction

    Text Solution

    |

  15. The enthalpies of formation of organic substances can be conveniently ...

    Text Solution

    |

  16. Entropy of vaporisation of water at 100^@C, if molar heat of vaporisat...

    Text Solution

    |

  17. One mole of ice is converted into water at 273 K. The entropies of H2O...

    Text Solution

    |

  18. One mole of a gas absorbs 200 J of heat at constant volume. Its temper...

    Text Solution

    |

  19. A system absorbs 10 kJ of heat at contant volume and its temperature r...

    Text Solution

    |

  20. One mole of a gas occupying 3 dm^3 expands against constant external p...

    Text Solution

    |