A weak unknown monoprotic acid is titrated with a strong base. The titration curve is shown...

Question

Question

science chemistry

Answer 1

Answer #1

From the given graph, the equivalent point is at 25 mL, hence half equivalent point will be at 12.5 mL.

pH at half equivalent point = pKa

∴ pKa = 4.5

Ka = 10^-4.5

∴ Ka = 3.2 x 10^-5

Answer 2

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