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Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is an important compound in industry and agriculture. Calculate...

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Chemistry

Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is animportant compound in industry and agriculture.

Calculate the pH for each of the following points in thetitration of 50.0 mL of a 1.5 M H3PO3(aq) with 1.5 M KOH(aq).

pKa1= 1.30

pKa2= 6.70

(a) before addition of any KOH =_____number

(b) after addition of 25.0 mL of KOH = ______number

(c) after addition of 50.0 mL of KOH = ______number

(d) after addition of 75.0 mL of KOH =_______number

(e) after addition of 100.0 mL of KOH=______number

please explain how you got each! thanks so much

Answer & Explanation Solved by verified expert
4.4 Ratings (632 Votes)
H3PO3 millimoles 50 x 15 75 a Before any addition of KOH H3PO3 H H2PO3 15 0 0 15 x x x Ka1 HH2PO3 H3PO3 005 x2 15 x x 025 H 025 M    See Answer
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