Home
Class 12
CHEMISTRY
Enthalpy of formation of HF and HCl are ...

Enthalpy of formation of HF and HCl are -161 kJ and -92 kJ respectively. Which of the following statements is incorrect?

A

HCl is more stable than HF

B

HF and HCl are exothermic compounds

C

the affinity of fluorine to hydrogen is greater than the affinity of chlorine to hydrogen than the affinity of chlorine to hydrogen

D

HF is more stable than HCl.

Text Solution

Verified by Experts

The correct Answer is:
A

More the energy libertaed during the formation of one mole of a compound, more will be its stability
Or
Higher the enthalpy (-ve value) of formation of a compound greater will be stability of the compound. HF is more stable than HCl.
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2002

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY (MCQ.s)|60 Videos
  • KARNATAKA CET 2005

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

Which of the following statement is incorrect ?

Which of the following statement is incorrect?

The enthalpy of formation of two compounds A and B are -84 kJ and -156 kJ respectively. Which one of the following statements is correct ?

The enthalpy of combustion of graphite and diamond are -393.5 kJ and -395 kJ respectively. Which of them is more stable ?

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2003-CHEMISTRY
  1. Enthalpy of formation of HF and HCl are -161 kJ and -92 kJ respectivel...

    Text Solution

    |

  2. Heat liberated when 100 mL of 1N NaOH is neutralised by 300 ml of 1N H...

    Text Solution

    |

  3. For a reaction A+B rarr C+D if the concentration of A is doubled witho...

    Text Solution

    |

  4. In Goldschmidt aluminothermic process, thermite contains

    Text Solution

    |

  5. The structure of orthophosphoric acid is

    Text Solution

    |

  6. Solubility product of a salt AB is 1xx10^(-8)M^(2) in a solution in wh...

    Text Solution

    |

  7. The standard electrode potentials E^(@) for the half cell reactions ar...

    Text Solution

    |

  8. The ratio of cationic radius to anionic radius in an ionic crystal is ...

    Text Solution

    |

  9. Dacron is obtained by the condensation polymerisation of

    Text Solution

    |

  10. 4-chloro-3,5-dimethyl phenol is called

    Text Solution

    |

  11. The volume of water to be added N/2 HCl to prepare 500cm^(3) of (N)/(1...

    Text Solution

    |

  12. The equivalent weight of a certain trivalent element is 20. molecular ...

    Text Solution

    |

  13. Identify the reaction that doesn't take place during the smelting proc...

    Text Solution

    |

  14. Pick out the complex compound in which the central metal atom obeys EA...

    Text Solution

    |

  15. In a reversible reaction, the catalyst

    Text Solution

    |

  16. A galvix cell is constructed using the redox reaction, (1)/(2)H(2(g)...

    Text Solution

    |

  17. Same amount of electric current is passed through solutions of AgNO(3)...

    Text Solution

    |

  18. The flame colours of metal ions are due to

    Text Solution

    |

  19. The order of reactivities of methyl halides in the formation of Grigna...

    Text Solution

    |

  20. The reaction of an organic compound with ammonia followed by nitration...

    Text Solution

    |