Home
Class 11
CHEMISTRY
The heat of atomisation of PH(3) is 228 ...

The heat of atomisation of `PH_(3)` is 228 K cal/mol and that os `P_(2)H_(4)` is `335` kCal/mol. The energy of `P-P` is (in kcal)

A

31

B

102

C

93

D

26

Text Solution

Verified by Experts

The correct Answer is:
A

`DeltaH=H_(R)-H_(P)`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARAYNA|Exercise Level -II (C.W)|41 Videos
  • THERMODYNAMICS

    NARAYNA|Exercise Level -III|64 Videos
  • THERMODYNAMICS

    NARAYNA|Exercise C.U.Q|122 Videos
  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV EXEMPLAR PROBLEMS|24 Videos

Similar Questions

Explore conceptually related problems

The heat of atomisation of PH_(3(g)) is 228kcal mol^(-1) and that of P_(2)H_(2) is 355kcal mol^(-1) . Calculate the average bond energy of P-P bond.

The dissociation energy of CH_(4)(g) is 360 kcal mol^(-1) and that of C_(2)H_(6)(g) is 620 kcal mol^(-1) . The C-C bond energy

Heat of hydrogention of is 29 kcal mol^(-1) and that of is 56 "kcal" mol^(-1). Calculate the resonance energy of

The heat of atomisation of PH_(3)(g) and P_(2)H_(4)(g) are 954 kJ mol^(-1) and 1485 kJ mol^(-1) respectively. The P-P bond energy in kJ mol^(-1) is

NARAYNA-THERMODYNAMICS-Level -I (C.W)
  1. Human body requires 2370 k.cal of energy daily. If the heat of combusi...

    Text Solution

    |

  2. Energy required to dissociate 4 gms of H(2)(g) into free atoms is 208 ...

    Text Solution

    |

  3. The enthalpy change when 1.00 g of water freezes at 0^(@)C and 1.00 at...

    Text Solution

    |

  4. Deltax is given by : Deltax= ("hydration energy")+("lattice energy")...

    Text Solution

    |

  5. The bond energy of an O -H bond is 109 K. cal "mole"^(-1). When a mole...

    Text Solution

    |

  6. The heat of atomisation of PH(3) is 228 K cal/mol and that os P(2)H(4)...

    Text Solution

    |

  7. When enthalpy and entropy change for a chemical reaction are -2.5 xx10...

    Text Solution

    |

  8. The enthalpy and entropy change for the reaction, Br(2)(l)+Cl(2)(g)r...

    Text Solution

    |

  9. If Delta H("vap") of pure water at 100^(@)C is 40.627 kJ mol^(-1). The...

    Text Solution

    |

  10. The temperature at which the reaction Ag(2)O(s) rarr 2Ag(s) +1/2 O(2...

    Text Solution

    |

  11. The latent heat of fusion of ice is 5.99 kJ/mol at its melting point. ...

    Text Solution

    |

  12. The entropy change for the conversion of 1 mole of alpha-" tin" (at 13...

    Text Solution

    |

  13. DeltaH (vap) for water is 40.7 kJ mol^(-1). The entropy of vapourisati...

    Text Solution

    |

  14. Following data is known about melting of a compound AB.DeltaH=9.2kJmo...

    Text Solution

    |

  15. Combustion of hydrogen in a fuel cell at 300 K is represented as 2H(2(...

    Text Solution

    |

  16. What will be the value of Delta G^(@). If equilibrium constant for a r...

    Text Solution

    |

  17. Zn((s))+Cu((aq))^(+2) rarr Cu((s))+Zn((aq))^(+2) given that Delta(f)...

    Text Solution

    |

  18. CO((g))+1/2 O(2) (g) rarr CO(2(g)) DeltaH=-67.37 K.cal at 25^(@)C th...

    Text Solution

    |

  19. The standard Gibb's free energy change, DeltaG^(@) is related to equil...

    Text Solution

    |

  20. What is the free energy change, 'DeltaG' When 1.0 mole of water at 100...

    Text Solution

    |