A 65.0 mL solution of 0.141 M sulfurous acid (H, SO,) is titrated with 0.141 M NAOH. The pK, values of sulfurous acid are 1.857 (pKa1) and 7.172 (pK2). Calculate the pH at the first equivalence point. pH = %3D Calculate the pH at the second equivalence point. pH =

A 65.0 mL solution of 0.141 M sulfurous acid (H, SO,) is titrated with 0.141 M NAOH. The pK, values of sulfurous acid are 1.857 (pKa1) and 7.172 (pK2). Calculate the pH at the first equivalence point. pH = %3D Calculate the pH at the second equivalence point. pH =

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 93QRT: When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence...

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Question

A 65.0 mL solution of 0.141 M sulfurous acid (H,SO,) is titrated with 0.141 M NAOH. The pK, values of sulfurous acid are
1.857 (pKa1) and 7.172 (pK2).
Calculate the pH at the first equivalence point.
pH =
%3D
Calculate the pH at the second equivalence point.
pH =

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