Home
Class 11
CHEMISTRY
Standard molar enthalpy of formation of ...

Standard molar enthalpy of formation of 'CO_2', is equal to

A

Zero

B

standard molar enthalpy of combustion

C

the sum of standard molar enthalpies of formation of 'CO' and 'O_2'

D

the standard molar enthalpy of combustion of carbon (graphite)

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THE s- BLOCK ELEMENTS

    V PUBLICATION|Exercise QUESTION BANK|110 Videos

Similar Questions

Explore conceptually related problems

The species which by definition has zero standard molar enthalpy of formation at 298 K is

Define standard enthalpy of formation.

Assertion : During the reduction of ZnO to Zn,C is more efficient than CO. Reason : The standard free energy of formation of CO_2 from CO is always higher than that of ZnO.

a) Predict whether entropy increases or decreases in the following changes: i) l_2(S)rightarrowl_2(g) ii) Temperature of a crystalline solid is raised from 0 K and 115 K. iii) Freezing of water b) Calculate the enthalpy of combustion of methane. Given that standard enthalpies of formation of CH_4,CO_2 and H_2O are -75.2, -394 and -285.6 kJ/mol respectively.

Given that N_2(g)+3H_2(g)rarr2NH_3 Delta_rHtheta=-92.4 What is the sandard enthalpy of formation of NH_3 gas?

V PUBLICATION-THERMODYNAMICS-QUESTION BANK
  1. The heat content of 'Y' is greater than that of 'X', the rection 'X ra...

    Text Solution

    |

  2. The heat change for the reaction : 'C(s)+2 S(s) rarr CS2(l)' is '102....

    Text Solution

    |

  3. The equations representing the combustion of carbon and carbon monoxid...

    Text Solution

    |

  4. Delta H' for the the combustion of a compound is :

    Text Solution

    |

  5. Molar heat capacity of ethanol is 110.4 JK. Its specific heat capacity...

    Text Solution

    |

  6. Enthalpy of formation of ammonia is - '46.0 kJ mol^(-1)'. The enthalp...

    Text Solution

    |

  7. For an ideal gas, 'Cp' and 'Cv' are related as

    Text Solution

    |

  8. The Deltar H^0 for CO2(g), CO(g) and H2 O are -393.5,-110.5and -241.8 ...

    Text Solution

    |

  9. Equal volumes of one molar 'HCl' and 'H2 SO4' are neutralised (separat...

    Text Solution

    |

  10. If the dissociation energies of 'CH4' and 'C2 H6' are 360 and '620 kca...

    Text Solution

    |

  11. Standard molar enthalpy of formation of 'CO2', is equal to

    Text Solution

    |

  12. The enthalpy change in freezing 1 g of water (Delta fusion H=6 .0 kJ...

    Text Solution

    |

  13. For which of the reactions, Delta S is not positive : I2(s) rarr I2(g...

    Text Solution

    |

  14. In which of the following cases, reaction is spontaneous at all temper...

    Text Solution

    |

  15. When a solid melts, there is:

    Text Solution

    |

  16. The relation 'Delta G=Delta H-T Delta S' was given by

    Text Solution

    |

  17. If equilibrium constant for a reaction is 'K', then standard free ener...

    Text Solution

    |

  18. In a reversible process the total change in entropy is DeltaS (univers...

    Text Solution

    |

  19. Free energy, G may be defined as: (a)G=U-T (b)G=U+TS (c)G=H-TS (d)...

    Text Solution

    |

  20. The spontaneity of a process is expressed in terms of a change in Gibb...

    Text Solution

    |