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1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33 1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33

1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33 1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter14: Equilibria In Acid-base Solutions
Section: Chapter Questions
Problem 34QAP: A buffer is prepared using the butyric acid/butyrate (HC4H7O2/C4H7O2)acid-base pair. The ratio of...
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1. A buffer was prepared by mixing 150mL of a 0.30M glucolic acid solution and 350mL of a 0.45M potassium gluconate solution. Assuming a final volume of 500mL, A. What are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? B. What is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750mL of 0.50M bicarbonate buffer pH 9.75 using A. NaHCO3 (MM= 84g/mol) crystal and Na2CO3 (MM= 106g/mol) solid. B. 1M NaHCO3 and 1M Na2CO3 stock solutions. pKa values: pKa1= 6.35; pKa2= 10.33
1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33
Transcribed Image Text:1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33
1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33
Transcribed Image Text:1. A buffer was prepared by mixing 150 mL of a 0.30 M gluconic acid solution and 350 mL of a 0.45 M potassium gluconate solution. Assuming a final volume of 500 mL, a. what are the final concentrations of gluconic acid and potassium gluconate solutions after mixing? b. what is the pH of this buffer? The pKa for gluconic acid is 3.72. 2. Calculate the relative amounts (in grams or milliliters) of each buffer component needed to prepare 750 mL of 0.50 M bicarbonate buffer pH 9.75 using a. NaHCO3 (MM = 84 g/mol) crystal and Na2CO3 (MM = 106 g/mol) solid. b. 1M NaHCO3 and 1M Na2CO3 stock solutions. pka values: pKa1 = 6.35; pKa2 = 10.33
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