Home
Class 12
CHEMISTRY
Calculate the heat of formation of Benze...

Calculate the heat of formation of Benzene. The reaction is given below - `6C(s)+3H_(2)rarr C_(6)H_(6)(l)` and - 3268, - 393.5 nd -285.8 kJ are the heat of combustion of Benzene, heat of formation of `CO_(2)` and heat of formation of `H_(2)O(l)` respectively.

Text Solution

AI Generated Solution

To calculate the heat of formation of benzene (C₆H₆) from the given reaction: \[ 6C(s) + 3H_2(g) \rightarrow C_6H_6(l) \] we can use Hess's law, which states that the total enthalpy change for a reaction is the sum of the enthalpy changes for the individual steps of the reaction. ### Step 1: Write the combustion reaction of benzene The combustion of benzene can be represented as: ...
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    ALLEN|Exercise Questions|46 Videos
  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -1A|41 Videos
  • TEST PAPERS

    ALLEN|Exercise CHEMISTRY|19 Videos
  • Thermodynamics And Thermo Chemistry

    ALLEN|Exercise All Questions|39 Videos

Similar Questions

Explore conceptually related problems

The heat of formation of H_(2)O(l) is -68.0 kcal, the heat of formation of H_(2)O(g) can logically be

The heat of formation of H_(2)O_((l)) is -286.2 kJ. The heat of formation of H_(2)O_((g)) is likely to be

Calculate the enthalpy of formation of benzene represented by the following reaction: 6C(s) + 3H_(2)(g) to C_(6)H_(6)(l) The standard enthalpy of combustion of benzene is -3266.0 kJ and standard enthalpies of formation of CO_(2)(g) and H_(2)O(l) are - 393.1 and -286.0 kJ respectively.

The heats of formation of CO_(2(g)) and H_(2)O_((l)) are - 398 and -285 kJ mol^(-1) respectively. The heat of combustton of methane is -390 kJ. The heat of formation of methane will be

The heats of combustion for C, H_(2) and CH_(4) are -349, -241.8 and -906.7 kJ respectively. The heat of formation of CH_(4) is

Heat of formation of H_2 O_((l)), CO_(2(g)) "and" C_2 H_(4(g)) are -285.0, -399.0, and 69.9 kJ/mole respectively. The heat of combustion of ethylene is _________ .

The heat of formation (DeltaH_(f)^(@)) of H_(2)O(l) is equal to :

ALLEN-THERMODYNAMICS -EXERCISE -4
  1. Calculate the heat of formation of Benzene. The reaction is given belo...

    Text Solution

    |

  2. Assertion (A): There is no reaction known for which DeltaG is positive...

    Text Solution

    |

  3. Assertion :- Absolute value of enthalpy can not be determined. Reaso...

    Text Solution

    |

  4. Assertion :- When a rubber band is stretched entropy increases. Reas...

    Text Solution

    |

  5. Assertion :- At constant pressure for the change H(2)O(s)rarr H(2)O(g)...

    Text Solution

    |

  6. Assertion (A): Enthalpy of graphite is lower than that of diamond. R...

    Text Solution

    |

  7. Assertion: The enthalpy of formation of gaseous oxygen molecules at 29...

    Text Solution

    |

  8. Assertion (A): May endothermic reactions that are not spontaneous at ...

    Text Solution

    |

  9. Assertion (A): Pressure, volume, and temperature are all extensive pro...

    Text Solution

    |

  10. Assertion (A): For a particular reaction, heat of combustion at consta...

    Text Solution

    |

  11. Assertion :- At constant temp 0^(@)C and 1 atm, the change H(2)O(s)rar...

    Text Solution

    |

  12. Assertion: The increase in internal energy (DeltaE) for the vaporisati...

    Text Solution

    |

  13. Assertion :- Water in liquid state is more stable than ice at room tem...

    Text Solution

    |

  14. Assertion :- In an isolated system the entropy increases due to sponta...

    Text Solution

    |

  15. Assertion :- Entropy is always constant for a closed system. Reason ...

    Text Solution

    |

  16. Assertion :- For an isolated system q is zero. Reason :- In an isola...

    Text Solution

    |

  17. Assertion :- Entropy of system increases for a spontaneous reactions. ...

    Text Solution

    |

  18. Assertion :- Catalyst change Gibbs free energy of system. Reason :- ...

    Text Solution

    |

  19. Assertion :- Q("Surr") is zero for adiabatic process Reason :- Final...

    Text Solution

    |