Home
Class 11
CHEMISTRY
Standard enthalpy of formation is zero f...

Standard enthalpy of formation is zero for

A

`CH_(3)OH`

B

HF

C

`H_(2)O`

D

`F_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D

For elements, enthalpy of formation is zero.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise NCERT Based Questions (IInd & IIIrd Law of Thermodynamics and Entropy)|41 Videos
  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise NCERT Based Questions (Heat of Reaction)|67 Videos
  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise (Assertion & Reason)|18 Videos
  • THE S-BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion & Reason|10 Videos

Similar Questions

Explore conceptually related problems

Standard enthalpy of formation is non zero for

The allotropic form of sulphur for which standard enthalpy of formation is taken as zero is ..................

Standard enthalpy of formation of water is -286 kJ mol^-1 . Calculate the enthalpy change for formation of 0.018 kg of water.

molar standard enthalpy of combusion of ethanol is -1320 kJ, malor standard enthalpy of formation of water and CO_(2)(g) are -286 kJ//mole and -393 kJ//mole respectively. Calculate the magnitude of molar standard enthalpy of formation of ethanol.

ERRORLESS-THERMODYNAMICS AND THERMOCHEMISTRY-NCERT Based Questions (First Law of Thermodynamics and Hess Law)
  1. Mass and energy are conserved is demonstrated by

    Text Solution

    |

  2. A mixture of 2 moles of carbon monoxide and one mole of oxygen in a cl...

    Text Solution

    |

  3. Standard enthalpy of formation is zero for

    Text Solution

    |

  4. DeltaE^(@) of combustion of isobutylene is -X kJ mol^(-1). The value o...

    Text Solution

    |

  5. The work done by the gas liberated when 50 g of iron (molar mass 55.85...

    Text Solution

    |

  6. For isothermal expansion of an ideal gas, the correct combination of t...

    Text Solution

    |

  7. Pressure-volume (PV) work done by an ideal gaseous system at constant ...

    Text Solution

    |

  8. A sample of liquid in a thermally insulated container is stirred for 1...

    Text Solution

    |

  9. Hess's law of constant heat summation is bases on

    Text Solution

    |

  10. According to Hess's law , the heat of reaction depends upon

    Text Solution

    |

  11. On the basis of following equations the heat of dimerisation of NO(2) ...

    Text Solution

    |

  12. If DeltaH(f)^(@) for H(2)O(2) and H(2)O are -188 kJ/mole and -286 kJ/m...

    Text Solution

    |

  13. The sublimation energy of I(2) (solid) is 57.3 KJ/mole and enthalpy o...

    Text Solution

    |

  14. The following thermochemical reactions are given : M+(1)/(2)O(2)to M...

    Text Solution

    |

  15. The enthalpy change for a reaction does not depend upon:

    Text Solution

    |

  16. On the basic of thermochemical equations (I),(II)and (III), Find out w...

    Text Solution

    |

  17. The reaction A to B , DeltaH=+24 kJ//"mole". For the reaction B to C, ...

    Text Solution

    |

  18. The enthalpy of neutralization of HCN by NaOH is - 12.13 kJ mol^(-1). ...

    Text Solution

    |

  19. One mole of magnesium in the vapor state absored 1200 kJ mol^(-1) of e...

    Text Solution

    |

  20. For the change,C("diamond") rarr C("graphite"), Delta H = -1.89 kJ , i...

    Text Solution

    |