Home
Class 12
CHEMISTRY
A mixture of 2 moles of carbon monoxide ...

A mixture of 2 moles of carbon monoxide and one mole of oxygen in a closed vessel is ignited to get carbon dioxide. If `Delta H` is the enthalpy change and `Delta U` is the change in internal energy, then

A

`/_\H gt AE`

B

`/_\Hlt/_\E`

C

`/_\H = /_\E`

D

the relationship depends on the capacity of the vessel

Text Solution

Verified by Experts

The correct Answer is:
b

Formation of CO2 from CO is an exothermic reaction, heat is evolved from the system, i.e. energy is lowered. Thus, exothermic reactions occur spontaneously on account of decrease in enthapy of system. Thus, `/_\E gt /_\H`
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2003

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos
  • KARNATAKA CET 2006

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

A mixture of 2 moles of CO and 1 mole of O_2 in a closed vessel is ignited to convert CO into CO_2 . Then

If Delta H is the change in enthalpy and Delta E is the change in internal energy accompanying a gaseous reaction then

If q is the heat added to the system, w is the work done by the system and Delta U is the change in internal energy, then according to first law of thermodynamics :

60 cc of oxygen was added to 24 cc of carbon monoxide and the mixture ignited. Calculate the volume of oxygen used up nd the volume of carbon dioxide formed.

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2005-CHEMISTRY
  1. Grignard reagent adds to

    Text Solution

    |

  2. Which of the following biomolecules contain non transition metal ion?

    Text Solution

    |

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

    Text Solution

    |

  4. The cooling in refrigerator is due to

    Text Solution

    |

  5. For a system in equilibrium, /\G = 0 under conditions of constant .......

    Text Solution

    |

  6. Molar heat of vaporisation of a liquid is 6 kJ mol^(-1). If the entrop...

    Text Solution

    |

  7. The temperature of the system decreases in an

    Text Solution

    |

  8. A buffer solution has equal volumes of 0.2 M NH(4)OH and 0.02 M NH(4) ...

    Text Solution

    |

  9. The hydrogen electrode is dipped in a solution of pH 3 at 25^@C. The p...

    Text Solution

    |

  10. 20 ml of 0.5 N HCl and 35 ml of 0.1 N NaOHare mixed. The resulting sol...

    Text Solution

    |

  11. Corrosion of iron is essentially an electrochemical phenomenon where t...

    Text Solution

    |

  12. The standard electrode potential is measured by

    Text Solution

    |

  13. A precipitate of AgCl is formed when equal volumes of the following ar...

    Text Solution

    |

  14. Which one of the following defects in the crystals lowers its density?

    Text Solution

    |

  15. Aradioactive isotope has t(1//2) of 10 days. If today 125 g of it is l...

    Text Solution

    |

  16. Which of the following cannot be accelerated?

    Text Solution

    |

  17. In which of the following nuclear reactions neutron is emitted?

    Text Solution

    |

  18. Molarity of 0.2 N H(2) SO(4) is

    Text Solution

    |

  19. In the equation of state of an ideal gas PV = nRT,the value of the uni...

    Text Solution

    |

  20. A comerical sample of hydrogen peroxide is labelled as 10 volume its ...

    Text Solution

    |