In ∆H = ∆U + ∆ngRT, the term ∆ng stands for:
AGaseous reactant moles minus product moles
BTotal moles of every species present
CGaseous product moles minus reactant moles
DMoles of liquid formed in the reaction
Answer & Solution
Correct answer: C. Gaseous product moles minus reactant moles
∆ng counts only gas-phase moles: products minus reactants.
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