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2The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2...

2The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, and Ka3 = 4.2 × 10-13 at 25.0 °C. What is the molar concentration of phosphate ion in a 2.5 M aqueous solution of phosphoric acid?

A) 0.13

B) 2.5 × 10-5

C) 8.2 × 10-9

D) 9.1 × 10-5

E) 2.0 × 10-19

Can you include the complete steps where Ka2 and Ka3 is used.

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