1.

For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, DeltaU and w correspond to PCl_(5)(g) rarr PCl_(3) (g) + Cl_(2)(g)

Answer»

`DeltaH = DELTAE`
`DeltaH gt DeltaE`
`DeltaH LT DeltaE`
None of these

Solution :`PCl_(5)(g)rarrPCl_(3)(g)+Cl_(2)(g)`
For this reaction `Deltan_(g)=2-1=1`
`Deltan_(g)` is positive, i.e., there is an increase in the number of GASEOUS moles then `DeltaHgtDeltaE`


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