1. Salts as Acids and Bases Cations Sloshing Anions Sloshing Salt Ionic Compound Dissolves Ions Slosh Ions as Acids Ions as Bases Assuming that only one ion affects the pH.

2. Salts that produce Neutral Solutions Salts that consist of: – Cations of strong bases (K +, Na +, etc.) – Anions of strong bases (Cl -, NO 3 -, etc.) EX. KCl, NaCl, NaNO 3, KNO 3 Turn to p. 657 LOOK AT TABLE!

3. For any salt whose: – cation has neutral properties (Na +, K +, etc) – anion is conjugate base of a weak acid … and K b can be calculated Salts that produce Basic Solutions Salts as Weak Bases Example: Calculate the pH of a.3 M NaF solution. The K a for HF is 7.2 x 10 -4.

4. For salts in which/that contain: – The anion is not a base – The cation is the conjugate acid of a weak base – Highly charged metal ion (polarizes the O-H bonds causing H to be more acidic) The higher the charge of the metal ion, the stronger the acidity of the hydrated ion Salts that produce Acidic Solutions

5. Salts as Weak Acids Examples Calculate the pH of 0.10 M NH 4 Cl solution. The K b value for ammonia = 1.8 x 10 -5. Calculate the pH of 0.10 M AlCl 3 solution. The K a value for Al(H 2 O) 6 +3 = 1.4 x 10 -5.

6. What if both ions affect pH? Qualitative Comparisons Compare K a of acidic ion to K b value of basic ion K a > K b ACIDIC K a < K b BASIC K a = K b NEUTRAL

7. CREATE SUMMARY CHART Go here http://www.sciencegeek.net/APchemistry/Presenta tions/14_Salts/index.html http://www.sciencegeek.net/APchemistry/Presenta tions/14_Salts/index.html Work through examples!