Home
Class 12
CHEMISTRY
Given that: i. C(s) + O(2)(g) rarr CO(...

Given that:
i. `C(s) + O_(2)(g) rarr CO_(2)(g) , DeltaH =- 94.05 kcal`
ii. `H_(2)(g) +(1)/(2) O_(2)(g) rarr H_(2)O(l), DeltaH =- 68.32 kcal`
iii.`C_(2)H_(2)(g) +(5)/(2) O_(2)(g) rarr 2CO_(2)(g) +H_(2)O(l), DeltaH =- 310.62 kcal`
The heat of formation fo acetylene is

Text Solution

Verified by Experts

The correct Answer is:
54.2 kcal
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    IIT-JEE PREVIOUS YEAR (CHEMISTRY)|Exercise JEE Main And Advanced|17 Videos

Similar Questions

Explore conceptually related problems

Using the following thermochemical data. C(S)+O_(2)(g)rarr CO_(2)(g), Delta H=94.0 Kcal H_(2)(g)+1//2O_(2)(g)rarr H_(2)O(l), Delta H=-68.0 Kcal CH_(3)COOH(l)+2O_(2)(g)rarr 2O_(2)(g)rarr 2CO_(2)(g)+2H_(2)O(l), Delta H=-210.0 Kcal The heat of formation of acetic acid is :-

Find the heat of formation of ethyl alcohol for following data C(s) +O_(2)(g) rarr CO_(2)(g) DeltaH =- 94 kcal H_(2)(g) +1//2O_(2)(g) rarr H_(2)O(l), DeltaH =- 68 kcal C_(2)H_(5)OH(l)+3O_(2)(g) rarr 2CO_(2)(g) +3H_(2)O(l) DeltaH =- 327 kcal

Given that: 2C(s)+O_(2)(g)to2CO_(2)(g)" "(DeltaH=-787kJ) . . . (i) H_(2)(g)+1//2O_(2)(g)toH_(2)O(l)" "(DeltaH=-286kJ) . . . (ii) C_(2)H_(2)+2(1)/(2)O_(2)(g)to2CO_(2)(g)+H_(2)O(l)" "(DeltaH=-1310kJ) . . .(iii) The heat of formation of acetylene is:

H_(2)(g)+(1)/(2)O_(2)(g)rarr2H_(2)O(l), DeltaH =- 286 kJ 2H_(2)(g)+O_(2)(g)rarr2H_(2)O(l)……………kJ(+-?)

C_(4)H_(10)+(13)/(2)O_(2)(g)rarr4CO_(2)(g)+5H_(2)O(l), DeltaH =- 2878 kJ DeltaH is the heat of……….of butane gas.

Given: 2C_((s)) + 2O_(2(g)) to 2CO_(2(g)), Delta H_1 =-767 kJ …(i) H_(2(g)) + 1/2 O_(2(g)) to H_2 O_((l)), Delta H_2 =-266 kJ …(ii) C_2 H_(2(g)) + 5/2 O_2 to 2CO_(2(g)) + H_2 O_((l)) , Delta H_3 =-1290 kJ ….(iii) Heat of formation of acetylene is _________ .

Given that - 2C(s)+2O_(2)(g)rarr 2CO_(2)(g) Delta H = -787 KJ H_(2)(g)+ 1//2O_(2)(g)rarr H_(2)O(l) Delta =-286 KJ C_(2)H_(2)(g)+(5)/(2)O_(2)(g)rarr H_(2)O(l) Delta H=-1310 KJ Heat of formation of acetylene is :-

C(s)+O_(2)(g)toCO_(2)(g),DeltaH=-94 kcal 2CO(g)+O_(2)to2CO_(2),DeltaH=-135.2 kcal The heat of formation of CO(g) is

IIT-JEE PREVIOUS YEAR (CHEMISTRY)-THERMODYNAMICS AND THERMOCHEMISTRY-JEE Main And Advanced
  1. The polymerisation of ethylene to linear polyethylene is represented b...

    Text Solution

    |

  2. In order to get maximum calorific output a burner should have an optim...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  5. The enthalpy of combustion of H(2) , cyclohexene (C(6)H(10)) and cyclo...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  8. The bond dissociation energy of gaseous H(2),Cl(2) and HCl are 104,58 ...

    Text Solution

    |

  9. Given the following standard heats of reactions: (a) heat of formati...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  13. the standed reaction free energy for N(2)O(4)(g) to 2NO(2)is DeltaG...

    Text Solution

    |

  14. we consider a grwing plant. Limting our system to plant itself, to be ...

    Text Solution

    |

  15. One mole of a monationc ideal gas intially at a pressure of 2.00 bar a...

    Text Solution

    |

  16. How much heat flows into the system along path ADB it the work done by...

    Text Solution

    |

  17. When the system is retuned form state B to A along the curved path, th...

    Text Solution

    |

  18. Assertion All reversible reaction proceeds in direction of lower Gibbs...

    Text Solution

    |

  19. Assertion lsothemal expansion of ideal gas againt vacuum must be simul...

    Text Solution

    |

  20. Match the statements of column I with values of column II.

    Text Solution

    |