Chapter 14

Bases

Properties of bases:

Lots of hydroxide ionsOH-Taste bitterSlipperyCorrosive

pH greater than 7 (8 – 14)

Turns red litmus paper blue

Turns most indicators blue

Turns pink in the presence of phenolphthalein

Uses of Bases

Sodium Hydroxide NaOH

Production of : soapPaperDrain cleanerOven cleaner

Calcium Hydroxide Ca(OH)2

Cement

Mortar

Plaster

Ammonium Hydroxide NH4OH

Cleaners

Fertilizers

Magnesium Hydroxide Mg(OH)2

Antacids used to treat heartburn

Aluminum Hydroxide Al(OH)3

Deodorant

Strong vs. WeakSodium hydroxide NaOH

Calcium hydroxide Ca(OH)2

Potassium Hydroxide KOH

Ammonia NH4OHMagnesium hydroxide Mg(OH)2

Aluminum hydroxide Al(OH)3