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)

Text Solution

Verified by Experts

`PH_(3(g))rarr P_((g))+3H_((g)), DeltaH=228kcal//mol`
`H_(2)P=PH_(2)rarr 2P_((g))+4H_((g)),DeltaH=355kcal//mol`
`:. DeltaH=e_(P-P)+4e_(P-H)`
or `355-e_(P-P)+4xx(228)/(3)( :. e_(P-H)=(228)/(3))`
`:. e_(P-P)=51kcal//mol`
Promotional Banner

Topper's Solved these Questions

  • THERMOCHEMISTRY

    P BAHADUR|Exercise MISC. PROBLEMS|5 Videos

  • THERMOCHEMISTRY

    P BAHADUR|Exercise Exercise 2|1 Videos

  • THERMOCHEMISTRY

    P BAHADUR|Exercise ENTHALPY CHANGE|20 Videos

  • REDOX REACTIONS

    P BAHADUR|Exercise Exercise(8) Statement:Explanation type problems|19 Videos

  • THERMODYNAMICS

    P BAHADUR|Exercise Exercise|232 Videos

Similar Questions

Explore conceptually related problems

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

The bond energy of H_(2) is 104.3 kcal mol^(-1) . If means that :