Home
Class 11
CHEMISTRY
The difference between the heats of reac...

The difference between the heats of reaction at constant pressure and a constant volume for the reaction `2C_(6)H_(6)(l) + 15O_(2)(g) rarr 12CO_(2)(g) + 6H_(2)O(l)` at `25^(@)C` in `kJ` is

A

`-7.43`

B

`+3.72`

C

`-3.72`

D

`+7.43`

Text Solution

Verified by Experts

`DeltaH = DeltaU + Deltan_(g)RT`. Here, `Deltan_(g) = 12 - 15 =- 3`.
Thus, `DeltaH - DeltaU =- 3 xx 8.314 xx 298 =- 7.43kJ`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    CENGAGE CHEMISTRY|Exercise Ex 6.1|26 Videos

  • THERMODYNAMICS

    CENGAGE CHEMISTRY|Exercise Ex 6.2|27 Videos

  • STOICHIOMETRY

    CENGAGE CHEMISTRY|Exercise Archives Subjective|33 Videos

Similar Questions

Explore conceptually related problems

The difference heats of reaction at constant pressure and constant volume for the reaction 2C_(6)H_(6)(l)+15O_(2)(g)rarr 12CO_(2)(g)+6H_(2)O(l) at 25^(@)C in KJ is

The difference between heats of reaction at constant pressure and constant volume for reaction: 2C_(6)H_(6)(l)+15O_(2)(g)to12CO_(2)(g)+6H_(2)O(l) at 25^(@)C in kJ is

The difference between heat of reaction at constant pressure and at constant volume for the reaction C_6H_12(l) + 9O_2(g)rarr 6CO_2(g) + 6H_2O(l), at 27°C is

The difference between heat of reaction at constant pressure and constant volume for teh reaction 2C_4H_10 (g) + 130_2 (g) rarr 8CO_2 (g) + 10H_2O (l), at 27 ^@ C is

The difference between Delta H and Delta E for the reaction 2C_(6)H_(6)(l) + 15O_(2)(g) rightarrow 12 CO_(2)(g) + 6H_(2)O(l) at 25^(@) C in kJ is

CENGAGE CHEMISTRY-THERMODYNAMICS-Archives (Subjective)
  1. The difference between the heats of reaction at constant pressure and ...

    Text Solution

    |

  2. The enthalpies for the following reactions (DeltaH^(Theta)) at 25^(@)C...

    Text Solution

    |

  3. The standared enthalpies of formation at 298K for C C1(g), H(2)O(g), C...

    Text Solution

    |

  4. Given that: i. C(s) + O(2)(g) rarr CO(2)(g) , DeltaH =- 94.05 kcal ...

    Text Solution

    |

  5. The following statements is true only under some specific conditions. ...

    Text Solution

    |

  6. The bond dissociation energies of gaseous H(2),C1(2), and HC1 are 100,...

    Text Solution

    |

  7. The standard molar heats of formation of ethane, carbon dioxide, and l...

    Text Solution

    |

  8. An intimate mixture of ferric oxide and aluminium is used as solid fue...

    Text Solution

    |

  9. The standard ethelpy of combustion at 25^(@)C of hydrogen, cyclohexene...

    Text Solution

    |

  10. Using the data ( all vaues in kcal mol^(-1) at 25^(@)C) given below, c...

    Text Solution

    |

  11. Determine enthalpy change for, C(3)H(8(g))+H(2(g))rarr C(2)H(6(g))+C...

    Text Solution

    |

  12. Compute the heat of formation of liquie methyl alcohol is kilojoule pe...

    Text Solution

    |

  13. From the following data, calculate the enthalpy change for the combust...

    Text Solution

    |

  14. The standard heat of formation values of SF(6)(g), S(g), and F(g) are ...

    Text Solution

    |

  15. Show that the reaction CO(g) +(1//2)O(2)(g) rarr CO(2)(g) at 300K ...

    Text Solution

    |

  16. A sample of argon gas at 1atm pressure and 27^(@)C expands reversibly ...

    Text Solution

    |

  17. Diborane is a potential rocket fuel that undergoes combustion accordin...

    Text Solution

    |

  18. The standard potential of the following cell is 0.23V at 15^(@)C and 0...

    Text Solution

    |

  19. When 1pentyne (A) is treated with 4N alcoholic KOH at 175^(@)C, it is ...

    Text Solution

    |

  20. Two moles of a perfect gas undergo the following processes: a. A rev...

    Text Solution

    |

  21. C(v) values of He is always (3R)/(2) but C(v) values of H(2) is (3R)/(...

    Text Solution

    |