Prove that ΔH=ΔU+ΔnRT. what is the condition under which ΔU=ΔH?
But PV1 = n1RT
PV2 = n2RT
∴ΔH= ΔU+ n1RT - n2RT
i) When reaction is carried out in a closed vessel, so that volume remain constant ΔV=0
ii) When reaction involves only solids or liquids or solutions but no gaseous reactant or product.
iii) When reaction involves gaseous reactants and product but their number of mole are equal.