Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

Carbonic acid (H2CO3) is widely used in the production of sodas, soft drinks, sparkling wines, and other 
aerated beverages. It is a diprotic acid with Ka1 = 4.37 x 10-7 and Ka2 = 4.68 x 10-11

D. If you are to prepare a buffer solution with a pH of 11.00, which weak acid-conjugate base pair from carbonic acid should you use? Justify your answer. E. How are you going to prepare 50.00 mL of the buffer solution in (D)? The reagents that are provided to you are: 20.00 mL of 0.200 M sodium bicarbonate solution and a bottle of solid NaOH (MM = 39.997 g/mol). F. What will be the pH of the buffer solution prepared in (E) if 1.00 ml. of 0.100 M HCI is added to it?
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Transcribed Image Text:D. If you are to prepare a buffer solution with a pH of 11.00, which weak acid-conjugate base pair from carbonic acid should you use? Justify your answer. E. How are you going to prepare 50.00 mL of the buffer solution in (D)? The reagents that are provided to you are: 20.00 mL of 0.200 M sodium bicarbonate solution and a bottle of solid NaOH (MM = 39.997 g/mol). F. What will be the pH of the buffer solution prepared in (E) if 1.00 ml. of 0.100 M HCI is added to it?
Carbonic acid (H;CO:) is widely used in the production of sodas, soft drinks, sparkling wines, and other aerated beverages. It is a diprotic acid with Ka = 4.37 x 10"and K2 = 4.68 x 10-". A. Write the stepwise acid ionization equations for carbonic acid and the corresponding K, expressions. B. Calculate the concentration of all the species present at equilibrium in a 0.200 M carbonic acid solution. Show a complete ICE table for each dissociation step. C. What is the pH of the 0.200 M carbonic acid solution in (B)?
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Transcribed Image Text:Carbonic acid (H;CO:) is widely used in the production of sodas, soft drinks, sparkling wines, and other aerated beverages. It is a diprotic acid with Ka = 4.37 x 10"and K2 = 4.68 x 10-". A. Write the stepwise acid ionization equations for carbonic acid and the corresponding K, expressions. B. Calculate the concentration of all the species present at equilibrium in a 0.200 M carbonic acid solution. Show a complete ICE table for each dissociation step. C. What is the pH of the 0.200 M carbonic acid solution in (B)?
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