WM 8.1 Acids and Bases

Acid: a proton donor

Base: a proton receptor

Alkali: a base that dissolves in water to form hydroxide ions

Bronsted and Lowry

HCl (aq) + H2O (l)  ---> H3O+ (aq)  +  Cl- (aq)

• HCl is an acid because it looses a proton
• Water is a base because it accepts protons
• For the reverse reaction, the oxonium ion (H3O+) acts as an acid
• The chloride ion is a base for the reverse reaction because it accepts a proton

Conjugate Pair

• For every acid,…