Home
Class 12
CHEMISTRY
How much heat will be required at consta...

How much heat will be required at constant pressure to form 1.28 kg of `CaC_(2)` from CaO(s) & C(s) ? Given :
`{:(Delta_(f) H^(@) (CaO "," S) , = , "-152 kcal/mol") , (Delta_(f)H^(@) (CaC_(2) ","s) , = , "-14 kcal/mol"), (Delta_(f) H^(@) (CO "," g) , = , "-26 kcal/mol"):}`

A

`+112` kcal

B

`224` kcal

C

`3840` kcal

D

`2240` kcal

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THERMOCHEMISTRY

    MOTION|Exercise Exercise - 2 (Level-II)|29 Videos

  • THERMOCHEMISTRY

    MOTION|Exercise Exercise - 3|50 Videos

  • THERMOCHEMISTRY

    MOTION|Exercise EXERCISE -1 SECTION E|3 Videos

  • SURFACE CHEMISTRY

    MOTION|Exercise Exercise - 3 (Level-II)|12 Videos

  • THERMODYNAMICS

    MOTION|Exercise EXERCISE - 4 (LEVEL - II)|19 Videos

Similar Questions

Explore conceptually related problems

Calculate Delta_(r) H^(@) for Fe_(2) O_(3) (s) + 3 CO(g) to 2 Fe (s) + 3 CO_(2) (g) Given : Delta_(f) H^(@) (Fe_(2) O_(3) , s) = -822.2 kJ/mol Delta_(f) H^(@) (CO , g) = -110.5 kJ//mol , Delta_(f) H^(@) (CO_(2) , g) = -393.5 kJ/mol

Calculate the heat required to make 6.4kg of CaC_2 from CaO(s) and C(s) from the reaction that DeltaH_f^@(CaO) = -151.6 kcal DeltaH_f^@(CaC_2) = -14.2 kcal DeltaH_f^@(CO) = -26.4 kcal .

In certan areas where coal is cheap, artificial gas is produced for household use by the ''water gas'' raction C(s) +H_(2)O(g) underset(600^(@)C)rarr H_(2)(g) +CO(g) Assuming that coke is 100% carbon, calculate the maximum heat obtainable at 298K from the combustion of 1kg of coke, and compare this value to the maximum heat obtainable at 298K from burning the water was produced from 1.00 kg of coke. GIven: Delta_(f)H^(Theta), H_(2)O(l) =- 68.32 kcal//mol Delta_(f)H^(Theta),CO_(2) (g) =- 94.05 kcal//mol Delta_(f)H^(Theta),CO(g) =- 26.42 kcal//mol

Determine C-C and C-H bond enthalpy (in kJ//mol ) Given : Delta_(f)H^(@)(C_(2)H_(6),g)=-85kJ//mol," "Delta_(f)H^(@)(C_(3)H_(8),g)=-104kJ//mol Delta_("sub")H^(@)(C,s)=718kJ//mol," "B.E.(H-H)=436kJ//mol

For urea NH_(2) CONH_(2) (S) , Delta_(f) H_(298)^(@) = -333.5 kJ /mol. Find Delta_(f) U_(298)^(@) of urea .

Calculate K_(sp) for AgCI . Given: Delta_(f)H^(Θ) Ag^(o+) = 25.3 kcal mol^(-1) Delta_(f)H^(Θ) C1^(Θ) =- 40.0 kcal mol^(-1) Delta_(f)H^(Θ) AgC1=- 30.36 kcal mol^(-1) S^(Θ) Ag^(o+), S^(Θ) C1^(Θ) , and S^(Θ) AgC1 are 17.7, 13.2 and 23.0 cal mol^(-1)

MOTION-THERMOCHEMISTRY -EXERCISE - 2 (LEVEL - I)
  1. The enthalpy of the reaction H(2)O(2) ("?") to H(2) O ("?") + 1//2 O(...

    Text Solution

    |

  2. When enthyne is passed through a red hot tube, then formation of benze...

    Text Solution

    |

  3. How much heat will be required at constant pressure to form 1.28 kg of...

    Text Solution

    |

  4. Given : (i) NH(3) (g) + 3Cl(2)(g) rarr NCl(3)(g)+3HCl(g), Delta H(1)...

    Text Solution

    |

  5. Difference between DeltaH and Delta E for the combusion of liquid benz...

    Text Solution

    |

  6. (i) Cis -2- butene to trans-2-butene , Delta H(1) (ii) Cis - 2 - but...

    Text Solution

    |

  7. From the following data, the heat of formation of Ca(OH)(2 (s)) at ...

    Text Solution

    |

  8. Given that DeltaH(" comb ") of cyclopropane is -4000 kJ mol^(-1) . The...

    Text Solution

    |

  9. Heat of combustion of CH(4),C(2)H(6), C(2)H(4) and C(2)H(2) gases are ...

    Text Solution

    |

  10. Enthalpy change of the reaction 2H(g) to H(2)(g) is -104 kcal The ...

    Text Solution

    |

  11. Calculate the bond energy of C-H bond from the following data : (a) ...

    Text Solution

    |

  12. Heat evolved in the reaction H(2)+Cl(2) rarr 2HCl is 182 kJ Bond ene...

    Text Solution

    |

  13. The bond enthalpies of H(2) , X(2) and HX are in the ratio of 2 : 1 : ...

    Text Solution

    |

  14. For the reaction, bond energies are given as under – (i) C—C,...

    Text Solution

    |

  15. The heat of combustion of ethylene C(2) H(4) (g) is - 1420 kJ/mole . T...

    Text Solution

    |

  16. The reaction CH(4) (g) + Cl2 (g) to CH(3) Cl (g) to HCl (g) has Delta ...

    Text Solution

    |

  17. If x(1) , x(2) and x(3) are enthalpies of H-H , O=O and O-H bonds resp...

    Text Solution

    |

  18. Delta(r) H of which of the following reactions is zero ?

    Text Solution

    |

  19. For the allotropic change represented by the equation C (graphite) to ...

    Text Solution

    |

  20. Reactions involving gold have been of particular intrests to alchemist...

    Text Solution

    |