Home
Class 12
CHEMISTRY
If Delta(f)H^(@)(C(2)H(4)) and Delta(f)H...

If `Delta_(f)H^(@)(C_(2)H_(4))` and `Delta_(f)H^(@)(C_(2)H_(6))` are `x_(1)` and `x_(2)` kcal `"mol"^(-1)`, then heat of hydrogenation of `C_(2)H_(4)` is :

A

`x_1+x_2`

B

`x_1-x_2`

C

`x_2-x_1`

D

`x_1+2x_2`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 1

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|28 Videos

  • MOCK TEST 11

    AAKASH INSTITUTE ENGLISH|Exercise Example|14 Videos

Similar Questions

Explore conceptually related problems

When enthyne is passed through a red hot tube, then formation of benzene takes place: Delta_(f)H_((C_(2)H_(2))(g))^(Theta) = 230 kJ mol^(-1) Delta_(f)H_((C_(6)H_(6))(g))^(Theta) = 85kJ mol^(-1) Calculate the standard heat of trimerisation of ethyne to benzene: 3C_(2)H_(2)(g) rarr C_(6)H_(6)(g)

The following are heats of reactions : (A) DeltaH_(f)^(@) of H_(2)O(l)=-68.3kcal mol^(-1) (B) DeltaH_(comb)^(@) of C_(2)H_(2)=-337.2 kcal mol^(-1) (C) DeltaH_(comb)^(@) of C_(2)H_(4)=-363.7Kal mol_(-1) Then the heat charge for the reaction :- C_(2)H_(2)+H_(2)rarrC_(2)H_(4)

Delta_(f)H(H_(2)O) =- 68 kcal mol^(-1) and DeltaH of neutralisation is -13.7 kcal mol^(-1) , then the heat of formation of overset(Theta)OH is

From the following data, calculate the standard enthalpy of formation of propane Delta_(f)H^(Theta) CH_(4) = - 17 kcal mol^(-1) Delta_(f)H^(Theta)C_(2)H_(6) =- 24 kcal mol^(-1), BE (C-H) = 99 kcal mol^(-1) (C- C) = 84 kcal mol^(-1) .

Calculate the enthalpy of combustion of benzene (l) on the basis of the following data: a. Resonance energy of benzene (l) =- 152 kJ// mol b. Enthalpy of hydrogenation of cyclohexene (l) =- 119 kJ//mol c. Delta_(f)H^(Theta)C_(6)H_(12)(l) =- 156 kJ mol^(-1) d. Delta_(f)H^(Theta) of H_(2)O(l) =- 285.8 kJ mol^(-1) e. Delta_(f)H^(Theta)of CO_(2)(g) =- 393.5 kJ mol^(-1)

Enthalpic of hydrogenation of ethene (C_(2)H_(4)) and benzene (C_(6)H_(6)) are -136.68 and 205.65 kJ mo1^(-1) respectively Calculate the resonance energy of benzene (a) C_(2) H_(4(g)) + H_(2(g)) rarrC_(2) H_(6), DeltaH_(1) = - 136.68 "kJ mo1"^(-1) (b) C_(6)H_(6_((1))) + 3H_(2(g)) rarr C_(6) H_(12),DeltaH_(2) = - 205.65 "kJ mo1"^(-1) .

The heats of combustion of C_(2)H_(4), C_(2)H_(6) and H_(2) gases are -1409.5 KJ, -1558.3 KJ and -285.6 KJ respectively. The heat of hydrogenation of ethene is

Calculate the enthalpy change for the process C Cl_(4)(g) rarr C(g)+4Cl(g) and calculate bond enthalpy of C-Cl in C Cl_(4)(g) . Delta_(vap)H^(Θ)(C Cl_(4))=30.5 kJ mol^(-1) Delta_(f)H^(Θ)(C Cl_(4))=-135.5 kJ mol^(-1) Delta_(a)H^(Θ)(C )=715.0 kJ mol^(-1) , where Delta_(a)H^(Θ) is enthalpy of atomisation Delta_(a)H^(Θ)(Cl_(2))=242 kJ mol^(-1)

The enthalpy of combustion of H_(2) , cyclohexene (C_(6)H_(10)) and cyclohexane (C_(6)H_(12)) are -241 , -3800 and -3920KJ per mol respectively. Heat of hydrogenation of cyclohexene is

Ethanol was oxidised to acetic acid in a catalyst chamber at 18^(@)C . Calculate the rate of removel of heat to maintain the reaction chamber at 18^(@)C with the feed rate of 30 kg h^(-1) ethanol along with excess oxygen to the system at 18^(@)C , given that a 42 mol% yield based on ethanol is obtained. Given that Delta_(f)H^(Theta)underset(H_(2)O)'(l) =- 68.0 kcal mol^(-1) Delta_(f)H^(Theta)underset(C_(2)H_(5)OH)'(l) =- 66 kcal mol^(-1) Delta_(f)H^(Theta)underset(CH_(3)COOH)'(l) =- 118 kcal mol^(-1)

AAKASH INSTITUTE ENGLISH-MOCK TEST 10-Example
  1. Work done during isothermal expansion of one mole of an ideal gas from...

    Text Solution

    |

  2. Out of the following, choose the one which is not a part of internal e...

    Text Solution

    |

  3. Pressure volume (PV) work done by an ideal gas system at constant volu...

    Text Solution

    |

  4. 6mole of an ideal gas expand isothermally and reversibly from a volume...

    Text Solution

    |

  5. An ideal gas expands against a constant external pressure of 2.0 atmos...

    Text Solution

    |

  6. The equation 1/2H2(g)+1/2Cl2rarrHCl,DeltaH°= -24080cal means

    Text Solution

    |

  7. when 50 cm^3 of 0.2 N H3SO4 is mixed with 50 cm^3 of 1nKOH,the heat li...

    Text Solution

    |

  8. molar heat capacity of Aluminium is 25 JK^(-1)mol^(-1)the heat necessa...

    Text Solution

    |

  9. What will be the heat of formation of ethane, if the heat of combustio...

    Text Solution

    |

  10. If for H2 gas,Cp -Cv=a and for O2 gas,Cp-Cv=b,where Cp and Cv is heat ...

    Text Solution

    |

  11. In a constant volume calorimeter 5g of a gas with molecular weight 40 ...

    Text Solution

    |

  12. When 1 mole of oxalic acid is treated with excess of NaOH in dilute aq...

    Text Solution

    |

  13. The bond dissociation energies of X2, Y2 and XY are in the ratio of 1 ...

    Text Solution

    |

  14. The species which by definition has zero standard molar enthalpy of fo...

    Text Solution

    |

  15. One mole of anhydrous salt AB dissolves in water and liberates 15 J mo...

    Text Solution

    |

  16. choose the reaction in which DeltaH is not equal to DeltaU

    Text Solution

    |

  17. Hess's law is application for the determination of heat of

    Text Solution

    |

  18. Enthalpy (H) is equal to

    Text Solution

    |

  19. If Delta(f)H^(@)(C(2)H(4)) and Delta(f)H^(@)(C(2)H(6)) are x(1) and x...

    Text Solution

    |

  20. heat of combustion of gaseous compounds A(molar mass =16) B(molar mass...

    Text Solution

    |