CHEM 0010 Unit


UNIT # 10
Introduction
Objectives
Reading
10.1 Properties of Acids and Bases 10.2 Strong/Weak Acids 10.3 Strong/Weak Bases 10.4 Neutralization Reactions 10.5 Calculations Involving Neutalization Reactions 10.6 pH & pOH Scales
Problems

ACIDS & BASES AND IONIC REACTIONS

10.6 - pH and pOH Scales

pH and pOH are quantitative ways to express solutions of acids and bases. The pH scale is a more convenient way than using exponential notation for expressing concentration of hydrogen ions.

In general, for any hydrogen ion concentration of

1 x 10^-n moles/liter = [H⁺]

the pH is equal to

pH = n

Here is how it works mathematically.

The pH Scale

In general, for any hydroxide ion concentration of

1 x 10^-n moles/liter = [OH-]

the pOH is equal to

pOH = n

When the solution's pH is added to its pOH, the result is always equal to 14.

pH + pOH = 14

Section 15.5
pH and pOH ..p419

	Click on this link to view the pH titration curve for an acid-base neutralization reaction
	(Flash plugin required)

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1 x 10-n moles/liter = [H+]