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For the reaction N(2)(g)+3H(2)(g)to2NH...

For the reaction
`N_(2)(g)+3H_(2)(g)to2NH_(3)(g)`, which of the following is correct regarding `DeltaH` ?

A

`DeltaH=DeltaU+RT`

B

`DeltaH=DeltaU+2RT`

C

`DeltaH=DeltaU-2RT`

D

`DeltaH=DeltaU-RT`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaH=DeltaU+DeltanRT`
[where `Deltan=` no. of moles of gaseous products `-` no. of moles gaseous reactants ]
`:. "For" N_(2)(g)+3H_(2)(g)to2NH_(3)(g)`
`:. DeltaH=2-4=-2`
`DeltaH=DeltaU-2RT`
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