the heat of atomosaton pf `P_(4)H_(4)(g)and PH_(3) (g)` are 355 kcal / mol and 228 kcal/ mol respectively . The energy of P----P bond is

Question

the heat of atomosaton pf `P_(4)H_(4)(g)and PH_(3) (g)` are 355 kcal / mol and 228 kcal/ mol respectively . The energy of P----P bond is

the heat of atomosaton pf `P_(4)H_(4)(g)and PH_(3) (g)` are 355 kcal / mol and 228 kcal/ mol respectively . The energy of P----P bond is
A. `102 kcal mol ^(-1)`
B. `51 kcal mol ^(-1)`
C. `26 kcal mol ^(-1)`
D. `204 kcal mol ^(-1)`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - b
P ----- H bood energy `=228/3=76 kcal mol^(-1) for P_(4)H_(4)`
bond energy fo `4(P----H)+(P-----P)`
` 355 kcal mol^(-1)` `4xx 76 + (P--P)=355 kcal mol^(-1)`
(P---P) bond energy = `51 kcal mol^(-1)`

5 views Answered 2023-02-05 15:29