Chemistry - Thermochemistry Question with Solution | TestHub

ChemistryThermochemistryEnthalpy of ReactionEasy2 minPYQ_2020
ChemistryEasysingle choice

For the given reactionN2+3H2→2NH3which is carried out at constant temperature and pressure. IfΔHis enthalpy andΔUis the internal energy changes for the reaction, then which of the following expression is correct.

Options:

Answer:
C
Solution:

At constant P or T
ΔH=ΔU+ΔnRT
Δn=np-nR=2-4=-2
∴ΔH<ΔU.

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Reaction
⏱ 2mℹ️ Source: PYQ_2020

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