**Designing a Buffer Solution**To design a buffer with a pH of 7.76 using one of the weak acid/conjugate base systems shown below, consider the following data:| Weak Acid | Conjugate Base | \( K_a \) | \( pK_a \) ||-----------|----------------|-----------|-----------|| \( \text{HC}_2\text{O}_4^- \) | \( \text{C}_2\text{O}_4^{2-} \) | \( 6.4 \times 10^{-5} \) | \( 4.19 \) || \( \text{H}_2\text{PO}_4^- \) | \( \text{HPO}_4^{2-} \) | \( 6.2 \times 10^{-8} \) | \( 7.21 \) || \( \text{HCO}_3^- \) | \( \text{CO}_3^{2-} \) | \( 4.8 \times 10^{-11} \) | \( 10.32 \) |**Problem Statement:**Calculate 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.**Buffer Preparation:**- **Grams of potassium salt of weak acid:** - \[ \text{Enter value} \]- **Grams of potassium salt of conjugate base:** - \[ \text{Enter value} \]To solve this problem, you need to:1. **Select the appropriate acid/base pair:** Choose the weak acid and its conjugate base that has a \( pK_a \) value close to your target pH for the buffer.2. **Use the Henderson-Hasselbalch equation:** This equation relates the pH of the buffer to the \( pK_a \) and the concentrations of the acid and its conjugate base. \[ \text{pH} = pK_a + \log\left( \frac{[\text{base}]}{[\text{acid}]} \right) \]3. **Determine the ratio of the conjugate base to the acid:** Using the desired pH and the chosen

pH can be determined using H-H equation.

Design a buffer that has a pH of 7.76 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pka HC₂04 C₂04²- 6.4 x 10-5 4.19 H₂PO4 HPO4²- 6.2 x 10-8 7.21 HCO3 CO3²- 4.8 x 10-11 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 7.76 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pka HC₂04 C₂04²- 6.4 x 10-5 4.19 H₂PO4 HPO4²- 6.2 x 10-8 7.21 HCO3 CO3²- 4.8 x 10-11 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

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

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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