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Ionization Constants of Weak Acids | |||
---|---|---|---|
Acid | Formula | K a at 25 °C | Lewis Structure |
acetic | CH 3 CO 2 H | 1.8 10 −5 |
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arsenic | H 3 AsO 4 | 5.5 10 −3 |
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1.7 10 −7 | ||
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5.1 10 −12 | ||
arsenous | H 3 AsO 3 | 5.1 10 −10 |
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boric | H 3 BO 3 | 5.4 10 −10 |
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carbonic | H 2 CO 3 | 4.3 10 −7 |
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5.6 10 −11 | ||
cyanic | H CNO | 2 10 −4 |
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formic | HCO 2 H | 1.8 10 −4 |
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hydrazoic | H N 3 | 2.5 10 −5 |
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hydrocyanic | H CN | 4.9 10 −10 | |
hydrofluoric | H F | 3.5 10 −4 | |
hydrogen peroxide | H 2 O 2 | 2.4 10 −12 |
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hydrogen selenide | H 2 Se | 1.29 10 −4 | |
H Se – | 1 10 −12 | ||
hydrogen sulfate ion |
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1.2 10 −2 |
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hydrogen sulfide | H 2 S | 8.9 10 −8 | |
H S – | 1.0 10 −19 | ||
hydrogen telluride | H 2 Te | 2.3 10 −3 | |
H Te – | 1.6 10 −11 | ||
hypobromous | H BrO | 2.8 10 −9 | |
hypochlorous | H ClO | 2.9 10 −8 | |
nitrous | H NO 2 | 4.6 10 −4 |
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oxalic | H 2 C 2 O 4 | 6.0 10 −2 |
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6.1 10 −5 | ||
phosphoric | H 3 PO 4 | 7.5 10 −3 |
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6.2 10 −8 | ||
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4.2 10 −13 | ||
phosphorous | H 3 PO 3 | 5 10 −2 |
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2.0 10 −7 | ||
sulfurous | H 2 SO 3 | 1.6 10 −2 |
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6.4 10 −8 |
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