A 100.0-mL aliquot of 0.100 M diprotic acid H2A (pK1 = 4.00, pK2 = 8.00) was titrated with 1.00 M NaOH. Find the pH at the following volumes of base added and make a graph of pH versus Vb: Vb %3D = 0, 1, 5, 9, 10, 11, 15, 19, 20, and 22 mL.

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At what point in the titration of a weak base with a strong acid is the maximum buffer capacity
reached? This is the point at which a given small addition of acid causes the least pH change.
A
A 100.0-mL aliquot of 0.100 M diprotic acid H,A (pk, = 4.00, pK2 = 8.00) was titrated with 1.00 M
%D
NaOH. Find the pH at the following volumes of base added and make a graph of pH versus Vb: Vb
= 0, 1, 5, 9, 10, 11, 15, 19, 20, and 22 mL.
%3D
Transcribed Image Text:At what point in the titration of a weak base with a strong acid is the maximum buffer capacity reached? This is the point at which a given small addition of acid causes the least pH change. A A 100.0-mL aliquot of 0.100 M diprotic acid H,A (pk, = 4.00, pK2 = 8.00) was titrated with 1.00 M %D NaOH. Find the pH at the following volumes of base added and make a graph of pH versus Vb: Vb = 0, 1, 5, 9, 10, 11, 15, 19, 20, and 22 mL. %3D
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