Home
Class 11
CHEMISTRY
When 6g carbon is burnt in a sufficient ...

When 6g carbon is burnt in a sufficient amount of oxygen, the heat evolved is x KJ. The heat of combustion of carbons is

A

`-x KJ`

B

`-2x KJ`

C

`-4x KJ`

D

`-8x KJ`

Text Solution

Verified by Experts

The correct Answer is:
B

`6 gm rarr x`
`12gm rarr` ?
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARAYNA|Exercise Level -V|106 Videos
  • THERMODYNAMICS

    NARAYNA|Exercise Level-VI|150 Videos
  • THERMODYNAMICS

    NARAYNA|Exercise Level -I (H.W)|38 Videos
  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV EXEMPLAR PROBLEMS|24 Videos

Similar Questions

Explore conceptually related problems

When 14 grams of ethene is completely burnt in oxygen, the heat evolved is 705 kJ. What is the heat of combustion (in kJ mol^(-1) ) of ethene ?

When 10 grams of methane is completely burnt in oxygen, the heat evolved is 560 kJ. What is the heat of combustion (in kJ mol^(-1) ) of methane?

When a certain amount of ethylene was combusted, 5644 kJ heat was evolved. If heat of combustion of ethylene is 1411 kJ , the volume of O_(2) (at NTP ) the entered into the reaction is:

When a certain amount of ethylene was combusted, 6226 kJ heat was evolved. If heat of combustion of ethylene is 1411 kJ, the volume of O_(2) (at STP) that entered into the reaction is :

When a certain amount of ethylene was burnt 622 kJ heat was evolved. If heat of combustion of ethylene is 1411 kJ, the volume of O_(2) (at NTP) that entered into the reaction is

When 0.2 g of butanol was burnt in a suitable apparatus the heat evolved was sufficient to rise the temperature 200 g of water by 5^(@)C . The heat of combustion of butanol in kcal/mole will be

NARAYNA-THERMODYNAMICS-Level-II (H.W)
  1. In the following process/es Delta H lt Delta U (A) C(s) + O(2)(g) ra...

    Text Solution

    |

  2. Which of the following will involve evolution of heat ?

    Text Solution

    |

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

    Text Solution

    |

  4. Given the enthalpy of formation of CO(2)(g) is -94.0 KJ, of CaO(s) is ...

    Text Solution

    |

  5. C+O(2)rarr CO(2), Delta H = -94 K.cal, CO+(1)/(2)O(2) rarr CO(2), Delt...

    Text Solution

    |

  6. What is the heat of formation of C(6)H(6), given that the heats of com...

    Text Solution

    |

  7. How much energy is released when 6 mole of octane is burnt in ? Given ...

    Text Solution

    |

  8. The heat of combustion of methane is -880 KJ mol^(-1). The quantity of...

    Text Solution

    |

  9. When 6g carbon is burnt in a sufficient amount of oxygen, the heat evo...

    Text Solution

    |

  10. The heats of combustion of C(2)H(4), C(2)H(6) and H(2) gases are -1409...

    Text Solution

    |

  11. The enthalpies of formation of CO and CO(2) are -110.5 KJ mol^(-1) and...

    Text Solution

    |

  12. When 14 grams of ethene is completely burnt in oxygen, the heat evolve...

    Text Solution

    |

  13. H(2)O((g)) rarr H((g))+OH((g))Delta H = x(1) OH((g)) rarr H((g))+O((...

    Text Solution

    |

  14. Heat evolved in the reaction H(2)+Cl(2) rarr 2HCl is 182 kJ Bond ene...

    Text Solution

    |

  15. C(6)H(6) rarr C(6)H(12)Delta H = -204 KJ heat of hydrognentaion of eac...

    Text Solution

    |

  16. The direct conversion of A to B is difficult, hence is carried out by ...

    Text Solution

    |

  17. CaCO(3(s)) rarr CaO((s))+CO(2(g))Delta H = +180 KJ If entropies of lim...

    Text Solution

    |

  18. In which of the following reactions the entropy change is positive ?

    Text Solution

    |

  19. Calculate the free energy change for the following reaction at 300 K. ...

    Text Solution

    |

  20. For the reduction of lead oxide by coke (PbO+C rarr Pb+CO), Delta H an...

    Text Solution

    |