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10 questions from this quiz
Total enthalpy change is path-independent
Always zero
∑ΔfH\sum \Delta_f H∑ΔfH products −∑ΔfH- \sum \Delta_f H−∑ΔfH reactants
∑ΔcH\sum \Delta_c H∑ΔcH reactants −∑ΔcH- \sum \Delta_c H−∑ΔcH products
Upward from elements to compounds
Downward to combustion products
Due to opposite arrow directions in cycles
−40-40−40 kJ mol−1^{-1}−1
For organic compounds
Combustion products: \ceCO2(g)\ce{CO2(g)}\ceCO2(g) and \ceH2O(l)\ce{H2O(l)}\ceH2O(l)
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