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Tryptophan (HW) is a diprotic amino acid with Ka1 = 4.3 × 10-3 and Ka2 =...

Tryptophan (HW) is a diprotic amino acid with Ka1 = 4.3 × 10-3 and Ka2 = 4.7 × 10-10. Determine the pH of the following solutions.

A) 0.214 M tryptophan hydrochloride (H2W Cl–)

B) 0.214 M tryptophan (HW)

C) 0.214 M sodium tryptophanate (Na W–)

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