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Consider the titration of 100.0 mL of a 0.0570 M solution of the hypothetical weak acid  H3X...

Consider the titration of 100.0 mL of a 0.0570 M solution of the hypothetical weak acid  H3X (Ka1 = 4.4x10-3 , Ka2 = 4.4x10^-7, Ka3 = 4.4x10^-12) with 0.100 M KOH . Calculate the pH of the solution under the following condition:

1) after 228.0 mL of 0.100 M   has been added

pH =

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