1. A buffer solution can be made by mixing equal concentrations of acetic acid and sodium acetate. 2. A buffer solution can be made by mixing equal concentrations of hydrochloric acid and sodium chloride. 3. A buffer solution resists changes in pH when small quantities of acid or base are added. O 1 and 2 only O 2 and 3 only O 1 and 3 only O All of 1, 2, and 3 O None of these responses åpply.

1. A buffer solution can be made by mixing equal concentrations of acetic acid and sodium acetate. 2. A buffer solution can be made by mixing equal concentrations of hydrochloric acid and sodium chloride. 3. A buffer solution resists changes in pH when small quantities of acid or base are added. O 1 and 2 only O 2 and 3 only O 1 and 3 only O All of 1, 2, and 3 O None of these responses åpply.

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

Which of the following statements are TRUE of buffer solutions?
1. A buffer solution can be made by mixing equal concentrations of acetic acid and
sodium acetate.
2. A buffer solution can be made by mixing equal concentrations of hydrochloric acid
and sodium chloride.
3. A buffer solution resists changes in pH when small quantities of acid or base are
added.
O 1 and 2 only
O 2 and 3 only
O 1 and 3 only
All of 1, 2, and 3
O None of these responses åpply.

How many grams of the excess reactant remain assuming the reaction goes to
completion and that you start with 15.5 g of sodium sulfide and 12.1 g copper(II) sulfate?
Reaction: sodium sulfide + copper(II) sulfate → you know
0 9.39
O 16
O 9.6
O 5.9
O None of these responses apply.

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Buffer 2 will be 150 mL of 0.15 M Tris-HCl buffer with a pH of 8.5 Write out the chemical equation for this buffer. Identify which species is the conjugate acid and conjugate base.
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