Design a buffer that has a pH of 9.57 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa C20, HPO, co, HC,04 6.4x105 4.19 H2PO4 6.2x108 7.21 HCO, 4.8x1011 10.32 How many grams of the sodium salt of the weak acid must be combined with how many grams of the sodium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams sodium salt of weak acid = grams sodium salt of conjugate base = 5.

Design a buffer that has a pH of 9.57 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa C20, HPO, co, HC,04 6.4x105 4.19 H2PO4 6.2x108 7.21 HCO, 4.8x1011 10.32 How many grams of the sodium salt of the weak acid must be combined with how many grams of the sodium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams sodium salt of weak acid = grams sodium salt of conjugate base = 5.

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

Section: Chapter Questions

Problem 2SP: Choose a weak-acid/weak-base conjugate pair from which you could prepare a buffer solution with pH =...

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Enough water is added to the buffer in Question 30 to make the total volume 5.00 L. (a) Calculate the pH of the buffer. (b) Calculate the pH of the buffer after adding 0.0250 mol of HCl to 0.376 L of the buffer. (c) Calculate the pH of the buffer after adding 0.0250 mol of KOH to 0.376 L of the buffer. (d) Compare your answers to Question 30 (a-c) with your answers to (a-c) of this problem. (e) Comment on the effect of dilution on the pH of a buffer and on its buffer capacity. Â
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Consider the weak acids in Table 13.2. Which acid-base pair would be best for a buffer at a pH of (a) 3.0(b) 6.5 (c) 12.0
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