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Calculate P-Cl bond enthalpy P(s)+(3)...

Calculate `P-Cl` bond enthalpy
`P(s)+(3)/(2)Cl_(2)(g)rarr PCl_(3)(g)` Given `: Delta_(f)H(PCl_(3),g)=306kJ //mol`
`DeltaH_("atomization")(P,s)=314kJ//mol`,
`Delta_(r)H(Cl,g)=1231kJ//mol`

A

123.66 kJ/mol

B

371 kJ/mol

C

19 kJ/mol

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`P(s)+(3)/(2)Cl_(2)(g)rarrPCl_(3)(g)`
`306 = (314 + 3 xx 121) - [B.E.(P-Cl)xx3],`
`B.E.(P-Cl)=123.66 " kJ"//"mol"`
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