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For the reaction, PCl(5)(g)to PCl(3)(g)+...

For the reaction, `PCl_(5)(g)to PCl_(3)(g)+Cl_(2)(g)`

A

`DeltaH=DeltaE`

B

`DeltaH gt DeltaE`

C

`DeltaH lt DeltaE`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH=DeltaE+PDeltaV=DeltaE+n_(g)RT`
`PCl_(5)(g)toPCl_(3)(g)+Cl_(2)(g)`
`Deltan_(g)=n_((p)_(g))-n_((r)g)=2-1=1`
`therefore DeltaH=DeltaE+1xxRT" "thereforeDeltaH gt DeltaE`
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