The value of Ksp for Mg3(AsO4)2 is 2.1 * 10-20. The AsO43- ion is derived from the weak acid H3AsO4 (pKa1 = 2.22; pKa2 = 6.98; pKa3 = 11.50). Calculate the pH of a saturated solution of Mg3(AsO4)2 in water.

The value of Ksp for Mg3(AsO4)2 is 2.1 * 10-20. The AsO43- ion is derived from the weak acid H3AsO4 (pKa1 = 2.22; pKa2 = 6.98; pKa3 = 11.50). Calculate the pH of a saturated solution of Mg3(AsO4)2 in water.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter14: Acids And Bases

Section14.9: Lewis Acids And Bases

Problem 14.26E

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Question

The value of Ksp for Mg₃(AsO₄)₂ is 2.1 * 10^-20. The AsO₄^3- ion is derived from the weak acid H₃AsO₄ (p_Ka1 = 2.22; p_Ka2 = 6.98; p_Ka3 = 11.50). Calculate the pH of a saturated solution of Mg₃(AsO₄)₂ in water.

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