Which equation shows the correct relationship between the Ka and Kb values for a diprotic species?
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15
What is the principal form of benzoic acid at pH = 3.00?
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thief
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fairy
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15
Which one of the following pairs cannot be mixed together to form a buffer solution?
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15
What is the principal form of benzoic acid at pH = 6.00?
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(T or F)A buffer made from a diprotic acid is treated in the same way as a buffer made from a monoprotic acid.
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10 The Ka of acetic acid is 1.7 *10-5 The pH of a buffer prepared by combining 50.0 mL of 1.00 M potassium acetate and 50.0 mL of 1.00 M acetic acid is __________.
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15
Which of the following is FALSE for an aqueous solution of the weak acid H3A?
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(T or F) The following reaction is an example a hydrolysis reaction: Lâ + H2O<====>HL + OHâ
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(T or F) For most diprotic species, the acidic (H2A) and basic (A2â) forms can be treated as monoprotic species when calculating the pH of a solution.
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15
What is the pH of a 0.100 M maleic acid (pK1 = 1.89, pK2 = 6.23) solution?
