Home
Class 12
CHEMISTRY
The enthalpy of combustion of C(6)H(6)(l...

The enthalpy of combustion of `C_(6)H_(6)(l)` is `-3250KJ` . When `039g` of benzene is burnt excess of oxygen in an open vessel, the amount of heat evolved is

A

16.25 J

B

16.25 kJ

C

32.5 J

D

32.5 kJ

Text Solution

Verified by Experts

The correct Answer is:
B
Heat evolved during combustion of 0.39 g
`C_(6)H_(6)=(3250xx0.39)/(78)=16.25` kJ.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise ORDINARY THINKING (Objective Questions) Bond energy|15 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise ORDINARY THINKING (Objective Questions) Free energy and Work function|57 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise ORDINARY THINKING (Objective Questions) First law of thermodynamics and Hess law|100 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise JEE Section (Matrix Match type questions)|3 Videos

Similar Questions

Explore conceptually related problems

The standard enthalpy of formation of C_(2)H_(4)(l) , CO_(2)(g) and H_(2)O(l) are 52 , 394 and -286 kJ mol^(-1) respectively. Then the amount of heat evolved by burning 7g of C_(2)H_(4)(g) is

When 0.532g of benzene (C_(6)H_(6)) , boiling point 353 K, is burnt with excess of oxygen in a constant volume system 22.3 kJ of heat is given out. Calculate DeltaH for the combustion process (R=8.31 JK^(-1) mol^(-1)) .

The heat of combustion of ethylene C_(2) H_(4) (g) is - 1420 kJ/mole . The volume of C_(2) H_(4) at NTP that would evolve 355 kJ on combustion is

ERRORLESS -THERMODYNAMICS AND THERMOCHEMISTRY -ORDINARY THINKING (Objective Questions) Heat of reaction
  1. Ozone is prepared by passing silent electric discharge through oxygen....

    Text Solution

    |

  2. Combustion fo glucose takes place according to the equation,C(6)H(12)O...

    Text Solution

    |

  3. The enthalpy of combustion of C(6)H(6)(l) is -3250KJ . When 039g of be...

    Text Solution

    |

  4. When 5 g of sulphur is burnt to SO(2), 46 kJ of heat is liberated. Wha...

    Text Solution

    |

  5. If a mole of hydrogen molecule is heated to a high temperature then wh...

    Text Solution

    |

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

    Text Solution

    |

  7. Four grams of graphite is burnt in a bomb calorimeter of heat capacity...

    Text Solution

    |

  8. The standard enthalpies of combustion of C(6)H(6(l)),C(("graphite"))a...

    Text Solution

    |

  9. The compound with negative value of heat of formation are called :

    Text Solution

    |

  10. Evaporation of water is

    Text Solution

    |

  11. If S+O(2)rarrSO(2),(DeltaH=-298.2) SO(2)+(1)/(2)O(2)rarrSO(3),(Del...

    Text Solution

    |

  12. For the allotropic change represented by equation C(diamond) rarr C(gr...

    Text Solution

    |

  13. The enthalpy change DeltaH for the neutralisation fo 1M HCI by caustic...

    Text Solution

    |

  14. A reaction that takes place with the absorption of energy is

    Text Solution

    |

  15. A solution of 500 ml of 0.2 M KOH and 500ml of 0.2 M HCl is mixed and ...

    Text Solution

    |

  16. In which of the following reaction does the heat change represent the ...

    Text Solution

    |

  17. The heat of formations of CO((g)) and CO(2(g)) are -26.4 kcal and -94....

    Text Solution

    |

  18. In the complete combustion of butanol C(4)H(9)OH(l), if Delta H is ent...

    Text Solution

    |

  19. The heat of combustion of CH(4)(g), C (graphite), H(2)(g) are 20kcal, ...

    Text Solution

    |

  20. Calculate DeltaH^(@) for the reaction Na(2)O(g)+SO(3)(g)toNa(2)SO(4)...

    Text Solution

    |