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Calculate the pH at 25°C of a 0.65 M aqueous solution of phosphoric acid (H3PO4). (Ka1,...

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Chemistry

Calculate the pH at 25°C of a 0.65 M aqueous solution ofphosphoric acid (H3PO4). (Ka1, Ka2, and Ka3 for phosphoric acid are7.5 × 10−3, 6.25 × 10−8, and 4.8 × 10−13, respectively.)

Please show how you do the quadratic equation. I am strugglingwith this in particular. Thank you!

Answer & Explanation Solved by verified expert
3.6 Ratings (531 Votes)
H3PO4aq H aq H2PO4 aqI 065 0 0C x x xE 065x    See Answer
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