A hypothetical acid H2X is both a strong acid and a diprotic acid. (a) Calculate the pH

Chapter 16, Problem 16.114

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A hypothetical acid H2X is both a strong acid and a diprotic acid. (a) Calculate the pH of a 0.050 M solution of H2X, assuming that only one proton ionizes per acid molecule. (b) Calculate the pH of the solution from part (a), now assuming that both protons of each acid molecule completely ionize. (c) In an experiment it is observed that the pH of a 0.050 M solution of H2X is 1.27. Comment on the relative acid strengths of H2X and HX-. (d) Would a solution of the salt NaHX be acidic, basic, or neutral? Explain.

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