Phosphoric acid can be prepared by the reaction of P4O10 with water as given by the following balanced chemical equation. P4O10(s) + 6H2O(l) β 4H3PO4(aq) When 25.8 g of H3PO4 (98.0 g/mol) is produced, 10.9 kJ of heat is evolved. Calculate ΞH for the overall reaction.
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