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Calculate K, at 25 degrees Celcius for phosphoric acid. H3PO4 (aq) H+(aq) H2PO4(aq) ?Hf(KJ/mol) -1288.3 0 -1285 S (J/mol-k) 158.2 0 89 B) Which thermodynamic factor is the most significant in accounting for the fact that phophoric acid is a weak acid? why? Please make sure it is answered completely and explained so I can learn how to do it.

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