How does H_3PO_4H3PO4 behave as an acid?

1 Answer
anor277
Jul 19, 2017

You have not quoted K_aKa values for H_3PO_4H3PO4 or H_2PO_4^(-)H2PO−4.......

Explanation:

Phosphoric acid speciates in solution according to......

H_3PO_4(aq) + H_2O(l) stackrel(K_(a1))rightleftharpoonsH_2PO_4^(-)(aq) + H_3O^(+)H3PO4(aq)+H2O(l)Ka1⇌H2PO−4(aq)+H3O+

And.............

H_2PO_4^(-)(aq) + H_2Ostackrel(K_(a2))rightleftharpoonsHPO_4^(2-)(aq) + H_3O^(+)H2PO−4(aq)+H2OKa2⇌HPO2−4(aq)+H3O+

We need K_(a1)Ka1 and K_(a2)Ka2 before we can address your question.

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