Design a buffer that has a pH of 7.70 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base HC₂04 H₂PO4 HCO3 C₂04²- HPO4²- CO3²- Ka 6.4 x 10-5 6.2 x 10-8 4.8 x 10-11 pka 4.19 7.21 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 7.70 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base HC₂04 H₂PO4 HCO3 C₂04²- HPO4²- CO3²- Ka 6.4 x 10-5 6.2 x 10-8 4.8 x 10-11 pka 4.19 7.21 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
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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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![**Buffer Design Exercise**
**Objective:** Design a buffer with a pH of 7.70 using one of the weak acid/conjugate base systems shown below.
| Weak Acid | Conjugate Base | \( K_a \) | \( pK_a \) |
|-----------|----------------|-----------|------------|
| \( \text{HC}_2\text{O}_4^- \) | \( \text{C}_2\text{O}_4^{2-} \) | \( 6.4 \times 10^{-5} \) | 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 |
**Task:** Calculate the amount of potassium salt of the weak acid and the potassium salt of its conjugate base needed to produce 1.00 L of a buffer that is 1.00 M in the weak base.
**Calculations Required:**
- **Grams potassium salt of weak acid =** [Input required]
- **Grams potassium salt of conjugate base =** [Input required]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F50fdeb9b-6d13-4111-b2f1-f8116069811e%2F95fed4fa-34ee-402d-9903-d42bd4289a83%2Frms35vn_processed.png&w=3840&q=75)
Transcribed Image Text:**Buffer Design Exercise**
**Objective:** Design a buffer with a pH of 7.70 using one of the weak acid/conjugate base systems shown below.
| Weak Acid | Conjugate Base | \( K_a \) | \( pK_a \) |
|-----------|----------------|-----------|------------|
| \( \text{HC}_2\text{O}_4^- \) | \( \text{C}_2\text{O}_4^{2-} \) | \( 6.4 \times 10^{-5} \) | 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 |
**Task:** Calculate the amount of potassium salt of the weak acid and the potassium salt of its conjugate base needed to produce 1.00 L of a buffer that is 1.00 M in the weak base.
**Calculations Required:**
- **Grams potassium salt of weak acid =** [Input required]
- **Grams potassium salt of conjugate base =** [Input required]
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