Home
Class 12
CHEMISTRY
For the reaction, C(7)H(8)(I) + 9O(2)(g)...

For the reaction, `C_(7)H_(8)(I) + 9O_(2)(g) rarr 7 CO_(2)(g) + 4H_(2)O(I)`, the calculated heat of reaction is 232 kJ `mol^(-1)` and observed heat of reaction is 50.4 kJ `mol^(-1)`, then the resonance energy is

A

`-182.2 kJ mol^(-1)`

B

`+182.2 kJ mol^(-1)`

C

172 kJ `mol^(-1)`

D

`-172 kJ mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise SECTION-C|13 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise SECTION-D|9 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise SECTION-A|45 Videos

  • THE SOLID STATE

    AAKASH INSTITUTE|Exercise Assignment (SECTION - D) (ASSERTION-REASON TYPE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

For a given reaction, C_(7)H_(8_(l))+9I_(2) (g) rarr 7CO_(2)(g) +4H_(2)O(l) the calculated and observed heats of reaction are respectively 232 and 50.4 kJ mol^(-) . The resonance energy for it will be

Calculate the enthalpy change for the reaction CH_(4)(g) + 2O_(2)(g) to CO_(2)(g) + 2H_(2)O(l) The enethalpy of formation of CH_(4)(g),CO_(2)(g) and H_(2)O(l) are -74.8 kJ mol^(-1) , -393.5 kJ mol^(-1) and -285.8 kJ mol^(-1) respectively.

In a reaction, CO_(2(g)) +H_(2(g)) rarr CO_((g)) +H_(2)O_((g)), Delta H=+2.8 kJ at a constant pressure. The heat ofreactton at constant volume is

H_(2)(g) +(1)/(2)O_(2)(g) rarr H_(2)O(g) DeltaH =- 242 kJ mol^(-1) Bond energy of H_(2) and O_(2) is 436 and 500 kJ mol^(-1) , respectively. What is bond energy of O-H bond?

Calculate the resonance enegry of toulene (use Kekule structure form the following data C_(7)H_(8)(l) +9O_(2)(g) rarr 7CO_(2)(g) +4H_(2)O(l)+ DeltaH, DeltaH^(Theta) =- 3910 kJ mol^(-1) C_(7)H_(8)(l) rarr C_(7)H_(8)(g), DeltaH^(Theta) = 38.1 kJ mol^(-1) Delta_(f)H^(Theta) (water) =- 285.8 kJ mol^(-1) Delta_(f)H^(Theta) [CO_(2)(g)] =- 393.5 kJ mol^(-1) Heat of atomisaiton of H_(2)(g) = 436.0 kJ mol^(-1) Heat of sulimation of C(g) = 715.0 kJ mol^(-1) Bond energies of C-H, C-C , and C=C are 413.0, 345.6 , and 610.0 kJ mol^(-1) .

For the reaction CH_4(g) + 2O_2(g) hArr CO_2(g) + 2H_2O(l) , Delta_rH=-170.8 "kJ mol"^(-1) Which of the following statement is not true?

Calculate the heat of combustion of eithene CH_(2) = CH_(2)(g) + 3O_(2)(g) rarr 2CO_(2)(g) + 2H_(2)O(I) The bond energy data are given below C = C = 619 kJ mol^(-1) C - H = 414 kJ mol^(-1) O = O = 499 kJ mol^(-1) C = O = 724 kJ mol^(-1) O - H = 460 kJ mol^(-1)

The reaction: NH_(2)CN(s) +(3)/(2)O_(2)(g)rarr N_(2)(g) +CO_(2)(g) +H_(2)O(l) Was carried out in a bomb caloriemeter. The heat released was 743 kJ mol^(-1) . The value of DeltaH_(300K) for this reaction would be

For the reaction CH_4(g) +2O_2(g) hArr CO_2(g) +2H_2O(I) Delta_rH=-170.8 kJ mol ^(-1) Which of the following statements is not true ?

AAKASH INSTITUTE-THERMODYNAMICS-SECTION-B
  1. Bond energies of H - H bond is 80 kJ/mol, I - I bond is 100 kJ/mol and...

    Text Solution

    |

  2. The enthalpy of formation of H(2)O(l) is -280.70 kJ/mol and enthalpy o...

    Text Solution

    |

  3. Heat of neutralisation of a strong dibasic acid in dilute solution by ...

    Text Solution

    |

  4. The heat released in neutralisation of HCI and NaOH is 13.7 kcal/mol, ...

    Text Solution

    |

  5. Which of the following reactions represents the enthalpy of formation ...

    Text Solution

    |

  6. The energy required to break 76 gm gaseous fluorine into free gaseous ...

    Text Solution

    |

  7. For the reaction 2HgO(s) rarr 2Hg(l) + O(2)(g)

    Text Solution

    |

  8. The heat of combustion of yellow phoshphorus and red phosphorus are -9...

    Text Solution

    |

  9. If the entropy of vaporisation of a liquid is 110 JK^(-1)mol^(-1) and ...

    Text Solution

    |

  10. Which of the following represents heat of formation (Delta H(f)) ?

    Text Solution

    |

  11. 1 mole of an ideal gas is expanded from an initial pressure of 1 bar t...

    Text Solution

    |

  12. Which of the following conditions should be satisfied for the given re...

    Text Solution

    |

  13. The heat of formation of CO(2) is -407 kJ/mol. The energy required for...

    Text Solution

    |

  14. The free energy change due to a reaction is zero when

    Text Solution

    |

  15. From the given graph Which of the following statement is correct ...

    Text Solution

    |

  16. The heat of combustion of sucrose C(12) H(22) O(11)(s) at constant vol...

    Text Solution

    |

  17. For the reaction, C(7)H(8)(I) + 9O(2)(g) rarr 7 CO(2)(g) + 4H(2)O(I), ...

    Text Solution

    |

  18. Given that , A(s) rarr A(l)DeltaH=x A(l) rarr A(g), DeltaH=y The...

    Text Solution

    |

  19. AB,A(2) and B(2) are diatomic molecules. If the bond enthalpies of A(2...

    Text Solution

    |

  20. One mole of a perfect gas expands isothermally to ten times its origin...

    Text Solution

    |