1. Objectives
To learn about reactions between strong acids and strong bases
To learn about the reaction between a metal and a nonmetal
To understand how electron transfer produces a chemical reaction

2. A. Reactions Between Acids and Bases
Arrhenius Acids and Bases
A strong acid is one in which virtually every molecule dissociates (ionizes) in water to an H+ ion and an anion.

3. A. Reactions Between Acids and Bases
Arrhenius Acids and Bases
A strong base is a metal hydroxide that is completely soluble in water, giving separate OH ions and cations.
Most common  NaOH, KOH

4. Properties of Acids and Bases
Produce Hydrogen ions
pH less than 7
Turn Litmus paper red
Neutralize bases
Corrode Metals
Taste sour
Bases
Produce Hydroxide ions
pH more than 7
Turn Litmus paper blue
Neutralize acids
“Slippery” (proteins)
Taste bitter

5. Bases:
Acids:

6. A. Reactions Between Acids and Bases
Reaction Between Arrhenius Acids and Bases
The products of the reaction of a strong acid and a strong base are water and a salt (salt = ionic compound)
“Acid plus base gives salt plus water”
Example: HCl(aq) + KOH(aq) → H2O(l)+ KCl(aq)
Net ionic equation:
H+(aq) + OH−(aq)  H2O(l)
(WOC P273 Q22, 23)

7. B. Reactions of Metals with Nonmetals (Oxidation-Reduction)
Reactions between metals and nonmetals involve a transfer of electrons from the metal to the nonmetal.
oxidation – reduction reaction
Sodium Chlorine Reaction
What happens to the atoms in this reaction?
2Na + Cl2 → 2NaCl

8. B. Reactions of Metals with Nonmetals (Oxidation-Reduction)
Oxidation Half-reaction:
Reduction Half-reaction:
Molecular Equation:
(WOC P273 Q25,26,27)