Practice question
Question
For a chemical reaction carried out at constant temperature (ideal-gas approximation) with Δ U = 250 J and no change in moles of gas ( Δ ng = 0 ), what is the change in enthalpy (Δ H) ?
Explanation
For reactions at constant temperature (ideal gas), Δ H = Δ U + Δ ng RT . With Δ ng = 0 , Δ H = Δ U = 250 J .
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