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If one mole of ammonia and one mole of h...

If one mole of ammonia and one mole of hydrogen chloride are mixed in a closed container to form ammonium chloride vapor, then

A

`DeltaH lt DeltaU`

B

there is no relationship

C

`DeltaH gt DeltaU`

D

`DeltaH = DeltaU`

Text Solution

Verified by Experts

The correct Answer is:
A
`NH_(3)(g)+HCl(g)toNH_(4)Cl(g)`
`Deltan_(g)=-1`, `DeltaH=DeltaU+Deltan_(g)RT`
`:' Deltan_(g)` is `-ve`, `DeltaH lt DeltaU`.
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