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Design a buffer that has a pH of 6.70 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base K pK, HC,04 C,0,²- 6.4 x 105 4.19 H2PO4 HPO,2- 6.2 x 10-8 7.21 HCO, co,2- 4.8 × 10-1! 10.32 How many grams of the potassium salt of the weak acid must be combined with how many grams of the potassium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams potassium salt of weak acid = grams potassium salt of conjugate base =

Design a buffer that has a pH of 6.70 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base K pK, HC,04 C,0,²- 6.4 x 105 4.19 H2PO4 HPO,2- 6.2 x 10-8 7.21 HCO, co,2- 4.8 × 10-1! 10.32 How many grams of the potassium salt of the weak acid must be combined with how many grams of the potassium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams potassium salt of weak acid = grams potassium salt of conjugate base =

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Designing a Buffer System** **Objective:** Design a buffer that has a pH of **6.70** using one of the weak acid/conjugate base systems shown below. **Buffer Systems Table:** | Weak Acid | Conjugate Base | \( K_{\text{a}} \) | \( pK_{\text{a}} \) | |-----------|----------------|--------------------|-------------------| | \( \text{HC}_2\text{O}_4^- \) | \( \text{C}_2\text{O}_4^{2-} \) | \( 6.4 \times 10^{-5} \) | 4.19 | | \( \text{H}_2\text{PO}_4^- \) | \( \text{HPO}_4^{2-} \) | \( 6.2 \times 10^{-8} \) | 7.21 | | \( \text{HCO}_3^- \) | \( \text{CO}_3^{2-} \) | \( 4.8 \times 10^{-11} \) | 10.32 | **Calculation Question:** How many grams of the potassium salt of the weak acid must be combined with how many grams of the potassium salt of its conjugate base, to produce **1.00 L** of a buffer that is **1.00 M** in the weak base? Variables to Solve: - Grams of potassium salt of weak acid = _____ - Grams of potassium salt of conjugate base = _____
Transcribed Image Text:**Designing a Buffer System** **Objective:** Design a buffer that has a pH of **6.70** using one of the weak acid/conjugate base systems shown below. **Buffer Systems Table:** | Weak Acid | Conjugate Base | \( K_{\text{a}} \) | \( pK_{\text{a}} \) | |-----------|----------------|--------------------|-------------------| | \( \text{HC}_2\text{O}_4^- \) | \( \text{C}_2\text{O}_4^{2-} \) | \( 6.4 \times 10^{-5} \) | 4.19 | | \( \text{H}_2\text{PO}_4^- \) | \( \text{HPO}_4^{2-} \) | \( 6.2 \times 10^{-8} \) | 7.21 | | \( \text{HCO}_3^- \) | \( \text{CO}_3^{2-} \) | \( 4.8 \times 10^{-11} \) | 10.32 | **Calculation Question:** How many grams of the potassium salt of the weak acid must be combined with how many grams of the potassium salt of its conjugate base, to produce **1.00 L** of a buffer that is **1.00 M** in the weak base? Variables to Solve: - Grams of potassium salt of weak acid = _____ - Grams of potassium salt of conjugate base = _____
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