Tonight

1
Tonights homework

• Read pages 595-599.
• Do practice problems 1 2.

2
Acids Bases

• What is an acid? What is a base?
• How man acids can you name?
• How many bases can you name?

3
Acids Bases
4
Acids Bases
5
Acids Bases
6
Acids Bases
7
Acids Bases

• H2O H2O ? H3O OH-

8
Acids Bases

• H2O H2O ? H3O OH-
• H2O ? H OH-

9
Acids Bases

• H2O H2O ? H3O OH-
• H2O ? H OH-

10

• There are two different definitions for acids and
  bases.
• You should know them both.

11
Arrhenius Model

• An acid is a substance that contains hydrogen and
  will ionize to produce H ions in solution.
• A base is a substance that contains hydroxide and
  dissociates to produce OH- ions in solution.

12
Arrhenius Model

• HCl ? H Cl-

13
Arrhenius Model

• HCl ? H Cl-
• NaOH ? Na OH-

14
Arrhenius Model

• HCl ? H Cl-
• NaOH ? Na OH-
• NH3 ? ?

15
Bronsted-Lowry Model

• An acid is an H donor.
• A base is an H acceptor.

16
Bronsted-Lowry Model

• HCl H2O ? H3O Cl-

17
Bronsted-Lowry Model

• HCl H2O ? H3O Cl-
• NaOH H ? Na H2O

18
Bronsted-Lowry Model

• HCl H2O ? H3O Cl-
• NaOH H ? Na H2O
• NH3 H2O ? NH4 OH-

19
Bronsted-Lowry Model

• HCl H2O ? H3O Cl-
• NaOH H ? Na H2O
• NH3 H2O ? NH4 OH-

20
Three more definitions

• Conjugate acid is produced when a base accepts H
  from an acid.

21
Three more definitions

• Conjugate acid is produced when a base accepts H
  from an acid.
• NH3 H ? NH4

22
Three more definitions

• Conjugate base is produced when an acid donates
  H to a base.

23
Three more definitions

• Conjugate base is produced when an acid donates
  H to a base.
• HCl ? H Cl-

24
Three more definitions

• amphoteric can act as an acid or as a base.

25
Three more definitions

• amphoteric can act as an acid or as a base.
• H2O H2O ? H3O OH-

26
Homework

• Read pages 595-599.
• Do practice problems 1 2.

27
Homework

• Read pages 595-599.
• Do practice problems 1 2.
• You will need these formulas
• Nitric acid HNO3
• Sulfuric acid H2SO4
• Hydrobromic acid HBr
• Hydrochloric acid HCl