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Chapter 15: Problem 60

What two components make up a buffered solution? Give an example of a combination that would serve as a buffered solution.

Short Answer

Expert verified
A buffered solution is composed of two components: a weak acid and its conjugate base, or a weak base and its conjugate acid. An example of a buffered solution is a mixture of acetic acid (CH3COOH) and its conjugate base, sodium acetate (CH3COONa).

Step by step solution

01

Identify the two components of a buffered solution

A buffered solution is a solution that can resist changes in pH when small amounts of an acid or base are added. The two components that make up a buffered solution are: 1. A weak acid and its conjugate base 2. A weak base and its conjugate acid
02

Provide an example of a combination that would serve as a buffered solution

An example of a buffered solution is a mixture of acetic acid (CH3COOH) and its conjugate base, sodium acetate (CH3COONa). Acetic acid is a weak acid, and sodium acetate is its conjugate base. When these two components are mixed together, they form a buffered solution that can resist changes in pH when small amounts of an acid or base are added to it.

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Most popular questions from this chapter

Name four strong acids. For each of these, write the equation showing the acid dissociating in water.

Which of the following bases have relatively strong conjugate acids? a. \(\mathrm{F}^{-}\) b. \(\mathrm{Cl}^{-}\) c. \(\mathrm{HSO}_{4}^{-}\) d. \(\mathrm{NO}_{3}^{-}\)

Calculate the pH corresponding to each of the pOH values listed, and indicate whether each solution is acidic, basic, or neutral. a. \(\mathrm{pOH}=4.32\) b. \(\mathrm{pOH}=8.90\) c. \(\mathrm{pOH}=1.81\) d. \(\mathrm{pOH}=13.1\)

Which of the following bases have relatively strong conjugate acids? a. \(\mathrm{SO}_{4}^{2-}\) b. \(\mathrm{Br}^{-}\) c. \(\mathrm{CN}^{-}\) d. \(\mathrm{CH}_{3} \mathrm{COO}^{-}\left(\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{O}_{2}^{-}\right)\)

Calculate the hydrogen ion concentration, in moles per liter, for solutions with each of the following pH values. a. \(\mathrm{pH}=9.01\) b. \(\mathrm{pH}=6.89\) c. \(p H=1.02\) d. \(\mathrm{pH}=7.00\)
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