Chapter 14: Acids

1
Chapter 14 Acids Bases

• Definitions Properties of Acids Bases
• Water dissociation pH
• Acids
• Strong vs Weak Acids
• Polyprotic Acids
• Bases
• Strong vs weak bases
• Acid/Base Properties of Salts
• Acid/Base Properties of Oxides
• Structure its Effect on Acid/Base Properties

2
Example 1

• Write dissociation reactions for the
• following acids
• HC2H3O2
• C2H5NH3
• Fe(H2O)63
• HClO4

3
Example 2

• Find the concentrations of H, OH-, and
• Cl in a solution of 0.30 M HCl. What is
• the pH of this solution?

4
Example 3

• Find the concentrations of all species
• present, the pH, and the percent
• dissociation of a 0.12 M solution of
• formic acid, HCHO2.

5
Example 4

• Find the pH of a solution that is 1.0 M in
• hydrocyanic acid and 1.0 M in
• hydrofluoric acid.

6
Example 5

• Calculate Ka for a 0.055M solution of
• propionic acid, HC3H5O2 that has a pH
• of 3.06.

7
Example 6

• Calculate Ka for a 0.109M solution of
• formic acid, HCHO2 that has a percent
• ionization of 3.7.

8
Example 7

• Calculate the concentrations of H and
• CO32- in a 5.45 x 10-4 M solution of
• carbonic acid.

9
Example 8

• H2SeO4 is a strong acid with a Ka2 of
• 1.2 x 10-2.
• Find the pH of a 0.150 M solution of H2SeO4 if
  the second H is ignored.
• Find the pH of a 0.150 M solution of H2SeO4 if
  the second H is included.

10
Example 9

• Find the concentrations of H and OH- in
• a solution of 0.30 M KOH. Find the pH
• of this solution.

11
Example 10

• Find OH- and the pH of a 0.15 M
• solution of hydroxylamine, NH2OH.
• Kb 1.1 x 10-8

12
Example 11

• The pH of a 0.63M solution of
• methylamine is 12.22 at 25C. What is
• Kb for methylamine at this temperature?

13
Example 12

• Calculate Kb for the cyanide ion.

14
Example 13

• Find Kb for the sulfate ion.

15
Example 14

• Find Ka for the ammonium ion.

16
Example 15

• Predict whether each of the following
• solutions is acidic, basic, or neutral.
• HONH3Cl (aq)
• K3PO4 (aq)
• Cu(NO3)2 (aq)
• CH3NH3OCl (aq)

17
Example 16

• Household bleach is 0.80 M NaClO. Find
• the concentrations of OH- and ClO- and
• the pH of household bleach.

18
Example 17

• Find the pH of a solution that is 0.10 M
• CH3NH3OCl.

19
Example 18

• Find the pH of a solution that is 0.10 M
• H3PO4.

20
Example 19

• Find the pH of a solution that is 0.10 M
• NaH2PO4.

21
Example 20

• Find the pH of a solution that is 0.10 M
• K2HPO4.

22
Ka Values Monoprotic Acids
23
Ka Values Polyprotic Acids
24
Kb Values