the-curve-below-shows-the-titration-of-a-diprotic-acid-h2a-with-naoh-estimate-th

Question

The curve below shows the titration of a diprotic acid H₂A with NaOH. Estimate the pKa values for the diprotic acid.

Graph showing the titration curve of a diprotic acid H2A with NaOH, indicating pH changes.

Accepted Answer

pKa₁ = 2.5; pKa₂ = 6.5

Answer

pKa₁ = 2.0; pKa₂ = 5.3

Answer

pKa₁ = 4.2; pKa₂ = 9.4

Answer

pKa₁ = 3.5; pKa₂ = 7.0

The curve below shows the titration of a diprotic acid H2A with NaOH. Estimate the pKa values for the diprotic acid.