A biochemist is purifying and characterizing an acid phosphatase from horse gram seeds. He reads the methods to be used, and then starts collecting all the materials and solutions. He will need a 0.2 M acetate buffer at pH 5.0 for multiple methods. Thus, he decides to prepare 500 mL of this buffer. He knows that this buffer is a good choice, since it is a mixture that contains both a weak acid (acetic acid) and its salt form (sodium acetate). He takes sodium acetate (MW = 82.034 g/mol), 1 M acetic acid solution, and water to prepare the solution. Describe how you would make the buffer. Choose one. show work. don't give Ai generated solution Dissolve 10.50 g of sodium acetate in minimal amounts of water. Add the 72 mL of 1 M acetic acid. Then, dilute to 500 mL. Dissolve 7.87 g of sodium acetate in minimal amounts of water. Add the 54 mL of 1 M acetic acid. Then, dilute to 500 mL. Dissolve 5.25 g of sodium acetate in minimal amounts of water. Add the 36 mL of 1 M acetic acid. Then, dilute to 500 mL. Dissolve 2.62 g of sodium acetate in minimal amounts of water. Add the 18 mL of 1 M acetic acid. Then, dilute to 500 mL.

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
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A biochemist is purifying and characterizing an acid phosphatase from horse gram seeds. He reads the methods to be
used, and then starts collecting all the materials and solutions. He will need a 0.2 M acetate buffer at pH 5.0 for
multiple methods. Thus, he decides to prepare 500 mL of this buffer. He knows that this buffer is a good choice, since it
is a mixture that contains both a weak acid (acetic acid) and its salt form (sodium acetate). He takes sodium acetate
(MW = 82.034 g/mol), 1 M acetic acid solution, and water to prepare the solution. Describe how you would make the
buffer.
Choose one.
show work. don't
give Ai generated
solution
Dissolve 10.50 g of sodium acetate in minimal amounts of water. Add the 72 mL of 1 M acetic acid. Then, dilute to
500 mL.
Dissolve 7.87 g of sodium acetate in minimal amounts of water. Add the 54 mL of 1 M acetic acid. Then, dilute to
500 mL.
Dissolve 5.25 g of sodium acetate in minimal amounts of water. Add the 36 mL of 1 M acetic acid. Then, dilute to
500 mL.
Dissolve 2.62 g of sodium acetate in minimal amounts of water. Add the 18 mL of 1 M acetic acid. Then, dilute to
500 mL.
Transcribed Image Text:A biochemist is purifying and characterizing an acid phosphatase from horse gram seeds. He reads the methods to be used, and then starts collecting all the materials and solutions. He will need a 0.2 M acetate buffer at pH 5.0 for multiple methods. Thus, he decides to prepare 500 mL of this buffer. He knows that this buffer is a good choice, since it is a mixture that contains both a weak acid (acetic acid) and its salt form (sodium acetate). He takes sodium acetate (MW = 82.034 g/mol), 1 M acetic acid solution, and water to prepare the solution. Describe how you would make the buffer. Choose one. show work. don't give Ai generated solution Dissolve 10.50 g of sodium acetate in minimal amounts of water. Add the 72 mL of 1 M acetic acid. Then, dilute to 500 mL. Dissolve 7.87 g of sodium acetate in minimal amounts of water. Add the 54 mL of 1 M acetic acid. Then, dilute to 500 mL. Dissolve 5.25 g of sodium acetate in minimal amounts of water. Add the 36 mL of 1 M acetic acid. Then, dilute to 500 mL. Dissolve 2.62 g of sodium acetate in minimal amounts of water. Add the 18 mL of 1 M acetic acid. Then, dilute to 500 mL.
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