Description

Bar chart showing standard enthalpies of formation (ΔH_f°) for common compounds. Bars: H₂O(l) = -286, CO₂(g) = -394, CH₄(g) = -75, C₂H₅OH(l) = -277, NH₃(g) = -46, NaCl(s) = -411, HCl(g) = -92, SO₂(g) = -297. Elements (O₂, H₂, C, Na, etc.) all = 0 (baseline). Click any two bars to calculate ΔH for a

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