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H2A is a diprotic acid with Ka1+1.43 x 10^-3 and Ka2=2.01 x 10^-6. Consider the titration...

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Chemistry

H2A is a diprotic acid with Ka1+1.43 x 10^-3 and Ka2=2.01 x10^-6. Consider the titration of 50.0mL of 0.300 M Na2A with 0.150M HCL. Find the pH at the following volumes of HCl (a) 0.00ml (b)50.0ml (c) 100.0ml (d) 175.0ml (e) 200.0ml (f)230.00ml

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3.9 Ratings (465 Votes)
A2 H2O HA OH Kb2 KwKa2 1 x 1014201 x 106 50 x 105 and HA H2O H2A OH Kb1 KwKa1 1 x 1014143 x 103 70 x 1012 a with 0 ml of 0150 M HCl we have only Na2A in solution which hydrolyzes let x amount be hydrolyzed then Kb2 5 x 105 x20150x x2 5 x 105x 75 x 106 0 x OH 271 x 103 M pOH logH log271 x 103 257 pH 14257 1143 b 50 mL of    See Answer
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