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Calculate ΔGo of formation, in kJ/mol, for H3PO4. 4P(s) 5O2(g) → P4O10(s) ΔG° = -269.8 kJ/mol H2O(l) → H2(g) ½O2(g) ΔG° = 237.2 kJ/mol P4O10(s) 6 H2O(l) → 4H3PO4(l) ΔG° = 630.2 kJ/mol P(s) 3/2 H2(g) 2O2(g) → H3PO4(l) ΔG°f = ?

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