1. Reactions of A/B

2. Types of Acid/Base Reactions
Strong Acid w/ Strong Base
Strong Acid w/ Weak Base
Weak Acid w/ Strong Base
Weak Acid w/ Weak Base

3. Strong Acid w/ Strong Base
Example: HCl + NaOH -->
Net Ionic Eq:
pH after mixing equal molar amounts is _________.
H3O+ + oH- --> H2O
Cl- & Na+
Neutral

4. Strong Acid w/ Weak Base
Example: HCl + NH3 -->
Net Ionic Equation:
pH after mixing equal molar amounts is ______
H3O+ + NH3 <--> NH4+ H2O
Cl- and NH4+
NH4 is the conjugate acid of weak base, so ACIDIC

5. Weak Acid w/ Strong Base
Example:
CH3COOH + NaOH -->
Net Ionic Eq:
pH after mixing equal molar amounts is _____
CH3COOH + OH- <--> H2O + CH3COO-
Conjugates: Na+ and CH3COO-
CH3COO- is the conj base of a weak acid, so BASIC

6. Weak acid w/ Weak Base Example: HCO2H + NH3 --> Net Ionic Eq:
pH after mixing equal molar amounts is _____
HCO2H + NH3 <----> HC2O- + NH4+
Compare the strengths of conjugate acids and bases formed!
If Ka > Kb acidic
If Kb > Ka basic
Kb = 5.6E-11
Ka= 5.6E-10, stronger acid so acidic

7. Molecular Structure & Strength
Acid strength is determined by extent of ionization of the O-H bond
Why is HNO2 a weak acid but HNO3 a strong acid?

8. Molecular Structure & Strength
Inductive effect: the attraction of electrons from adjacent bonds by more electronegative atoms
Nitrous Acid: HONO
Nitric Acid: HONO2
More Oxygen atoms draw electrons away from the O-H bond making it more polar