1.

Calculate the heat of formation of PCl_(5)(s) from the following data 2P(s)+3Cl_(2)(g)rarr2PCl_(3)(l),DeltaH=-151.8 kcalPCl_(3)(l)+Cl_(2)(g)rarrPCl_(5)(s),DeltaH=-32.8 kcal

Answer»

`- 108.7` KCAL
`+ 108.7` kcal
`- 184.6` kcal
`+ 184.6` kcal

Answer :A


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