Answered: 3-Calculate pH of a buffer solution…

3-Calculate pH of a buffer solution made from 0.15 M formic acid and 0.12 M sodium formate. The Ka of the formic acid is 1.8 x 10-4. Your answer

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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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

**Buffer Solutions and pH Calculations**

**2. Why buffer solutions resist change in their pH when small amounts of acid or base are added to them? Explain.**

Buffer solutions resist changes in pH because they contain an acidic component, HA, to neutralize OH- ions, and a basic component, A-, to neutralize H+ ions.

**3. Calculate the pH of a buffer solution made from 0.15 M formic acid and 0.12 M sodium formate. The Ka of the formic acid is 1.8 x 10^-4.**

_Your answer_ [Text box for entering answer]

**4. Which of the following solutions has a higher pH?**

- 20 mL of distilled water that 1 mL of 0.1 molar is added to it.
- 20 mL of 0.1 M buffer solution that 1 mL of 0.1 molar is added to it.

_Options are provided in a multiple-choice format._

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