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Consider the reaction, N(2)[g] + 3H(2)[g...

Consider the reaction, `N_(2)[g] + 3H_(2)[g] rarr 2NH_(3)[g]` carried out at constant temperature and pressure. If `Delta H and Delta U` are the enthalpy and internal energy changes for the reaction, which of the following expressions is true?

A

`Delta H=0`

B

`Delta H=Delta U`

C

`Delta H lt Delta U`

D

`Delta H gt Delta U`

Text Solution

Verified by Experts

The correct Answer is:
C
`N_(2)+3H_(2)rarr2NH_(3)" " Deltan=2-4= -2`
`Delta H=DeltaU+Delta nRT=Delta U-2RT" " :. Delta H lt Delta U`
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