### Buffer Solution Problem#### Buffer Composition:A buffer solution is composed of:- 0.402 M in HF- 0.402 M in KF#### Problem Statement:If the ionization constant (\(K_a\)) for HF is \(7.20 \times 10^{-4}\), determine the pH of the buffer solution.\[ \text{pH} = \_\_\_\_\_\_ \]#### Equation:Write the net ionic equation for the reaction when 0.107 mol of \(HNO_3\) is added to 1.00 L of the buffer solution.(Use the lowest possible coefficients and omit states of matter. Use \( H_3O^+ \) instead of \( H^+ \)).\[ \_\_\_\_\_\_ + \_\_\_\_\_\_ \rightarrow \_\_\_\_\_\_ + \_\_\_\_\_\_ \]#### Additional Instructions:- Ensure to use the correct coefficient.- Ignore states of matter.### Explanation:A buffer solution typically contains a weak acid and its conjugate base. In this case, HF (a weak acid) and KF (which provides \(K^+\) that doesn't react, leaving \(F^-\) as the conjugate base) make up the buffer system.To find the pH, use the Henderson-Hasselbalch equation:\[ \text{pH} = pK_a + \log \left( \frac{[\text{Conjugate Base}]}{[\text{Acid}]} \right) \]Given:- \( [HF] = 0.402 \, \text{M} \)- \( [F^-] = 0.402 \, \text{M} \)- \( K_a = 7.20 \times 10^{-4} \)First, find \( pK_a \):\[ pK_a = -\log(K_a) \]\[ pK_a = -\log(7.20 \times 10^{-4}) \]\[ pK_a \approx 3.14 \]Substitute the values into the Henderson-Hasselbalch equation:\[ \text{pH} = 3.14 + \log \left( \frac{0.402}{0.402} \right) \]\[ \text{pH} =

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A buffer solution is made that is 0.402 M in HF and 0.402 M in KF. If Ka for HF is 7.20 x 10-4 what is the pH of the buffer solution? pH = Write the net ionic equation for the reaction that occurs when 0.107 mol HNO3 is added to 1.00 L of the buffer solution. (Use the lowest possible coefficients. Omit states of matter. Use H3O* instead of H+)

A buffer solution is made that is 0.402 M in HF and 0.402 M in KF. If Ka for HF is 7.20 x 10-4 what is the pH of the buffer solution? pH = Write the net ionic equation for the reaction that occurs when 0.107 mol HNO3 is added to 1.00 L of the buffer solution. (Use the lowest possible coefficients. Omit states of matter. Use H3O* instead of H+)

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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