Bases

1
Chapter 14

• Bases

2
Properties of bases

• Lots of hydroxide ions
• OH-
• Taste bitter
• Slippery
• Corrosive

3

• pH greater than 7 (8 14)
• Turns red litmus paper blue
• Turns most indicators blue
• Turns pink in the presence of phenolphthalein

4
Uses of Bases
5
Sodium Hydroxide NaOH

• Production of soap
• Paper
• Drain cleaner
• Oven cleaner

6
Calcium Hydroxide Ca(OH)2

• Cement
• Mortar
• Plaster

7
Ammonium Hydroxide NH4OH

• Cleaners
• Fertilizers

8
Magnesium Hydroxide Mg(OH)2

• Antacids used to treat heartburn

9
Aluminum Hydroxide Al(OH)3

• Deodorant

10
Strong vs. Weak

• Sodium hydroxide NaOH
• Calcium hydroxide Ca(OH)2
• Potassium Hydroxide KOH

• Ammonia NH4OH
• Magnesium hydroxide Mg(OH)2
• Aluminum hydroxide Al(OH)3