Table 5E.1 Successive acidity constants of polyprotic acids at 298.15 K Acid pKa1 K2 pK2 pKa3 Carbonic acid, H,CO3 4.3 x 10-7 6.37 5.6 x 10-11 10.25 1.3 x 10 Hydrosulfuric acid, H,S Ethanedioic acid (oxalic acid), (COOH), 6.88 7.1 x 10-15 14.15 5.9 x 10-2 1.23 6.5 x 10-5 4.19 Phosphoric acid, H3PO4 7.6 x 10-3 2.12 6.2 x 10-8 7.21 2.1 x 10-13 12.67 Phosphorous acid, H,PO3 Sulfuric acid, H,SO4 1.0 x 10-2 2.00 2.6 x 10-7 6.59 Strong 1.2 x 10-2 1.92 Sulfurous acid, H2SO3 1.5 x 10-2 1.81 1.2 x 10-7 6.91 Tartaric acid, C,H,O2(COOH), 6.0 x 10-4 3.22 1.5 x 10-5 4.82

Table 5E.1 Successive acidity constants of polyprotic acids at 298.15 K Acid pKa1 K2 pK2 pKa3 Carbonic acid, H,CO3 4.3 x 10-7 6.37 5.6 x 10-11 10.25 1.3 x 10 Hydrosulfuric acid, H,S Ethanedioic acid (oxalic acid), (COOH), 6.88 7.1 x 10-15 14.15 5.9 x 10-2 1.23 6.5 x 10-5 4.19 Phosphoric acid, H3PO4 7.6 x 10-3 2.12 6.2 x 10-8 7.21 2.1 x 10-13 12.67 Phosphorous acid, H,PO3 Sulfuric acid, H,SO4 1.0 x 10-2 2.00 2.6 x 10-7 6.59 Strong 1.2 x 10-2 1.92 Sulfurous acid, H2SO3 1.5 x 10-2 1.81 1.2 x 10-7 6.91 Tartaric acid, C,H,O2(COOH), 6.0 x 10-4 3.22 1.5 x 10-5 4.82

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter10: Effect Of Electrolytes On Chemical Equilibria

Section: Chapter Questions

Problem 10.8QAP

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