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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 gas , then

A

`DeltaHltDeltaU`

B

there is no relationship

C

`DeltaHgtDeltaU`

D

`DeltaH=DeltaU`

Text Solution

Verified by Experts

The correct Answer is:
A
`NH_(3(g))+HCl_((g))toNH_(4)Cl_((g))`
`Deltan=` no . Of moles of product - no of moles of reactant
`=1-2`
`Deltan=1`
Now , `DeltaH=DeltaE+DeltanRT`
`DeltaH=DeltaE-RTorDeltaE=DeltaH+RT`
`thereforeDeltaEgtDeltaH(DeltaE=DeltaU)`= change in internal energy.
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