1. The lonization constant (Ks) of pyridine (CsHsN) is 5.62 x 10-. If 11.3 grams of sample of pyridine is dissolved in 250.0 mL of water, what are the equilibrium concentration of all species present? 2. A certain acidic vitamin is essential for all mammals since it plays a role in mineral absorption. A 0.125 M solution of this acid is found to have a pH of 2.034. Based on the table below, what most likely is the identity of this unknown acid? (Note: For this problem, treat the acid as if it is a monoprotic acid.)

Chemistry: An Atoms First Approach
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Author:Steven S. Zumdahl, Susan A. Zumdahl
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Chapter13: Acids And Bases
Section: Chapter Questions
Problem 9RQ: What is a salt? List some anions that behave as weak bases in water. List some anions that have no...
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1. The lonization constant (Ks) of pyridine (CsHsN) is 5.62 x 10. If 11.3 grams of sample of pyridine is dissolved in 250.0
mL of water, what are the equilibrium concentration of all species present?
2. A certain acidic vitamin is essential for all mammals since it plays a role in mineral absorption. A 0.125 M solution of
this acid is found to have a pH of 2.034. Based on the table below, what most likely is the identity of this unknown
acid? (Note: For this problem, treat the acid as if it is a monoprotic acid.)
Possible Identity of the Unknown Acid
ascorbic acid
Ka
7.9x105
citric acid
7.4x10
lactic acid
8.4x10*
nicotinic acid
1.4x10
Transcribed Image Text:1. The lonization constant (Ks) of pyridine (CsHsN) is 5.62 x 10. If 11.3 grams of sample of pyridine is dissolved in 250.0 mL of water, what are the equilibrium concentration of all species present? 2. A certain acidic vitamin is essential for all mammals since it plays a role in mineral absorption. A 0.125 M solution of this acid is found to have a pH of 2.034. Based on the table below, what most likely is the identity of this unknown acid? (Note: For this problem, treat the acid as if it is a monoprotic acid.) Possible Identity of the Unknown Acid ascorbic acid Ka 7.9x105 citric acid 7.4x10 lactic acid 8.4x10* nicotinic acid 1.4x10
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