Chemistry Honors – Classes 14 & 15

Dates

• Period B: Monday, February 2nd / Tuesday, February 3rd
• Period D: Monday, February 2nd / Wednesday, February 4th
• Period G: Tuesday, February 3rd / Wednesday, February 4th

Day 1 – Strong Acids / Molarity / pH

• Strong acid = full dissociation
• Weak acid = partial dissociation
• Ka is a number which expresses this
• Ka = (products/reactants)
• Students don’t know how to identify strong v weak
• [H+] means molarity of H+ in solution
• pH = -log[H+]
• pH = quick way to show how much is in solution

Day 2 – Examples of calculations

• Kw and autoionization of water
• determining pH, pOH
• acid / base reactions and the final pH of solution

Textbook Practice

• Ch. 14 (38, 41, 45, 51, 57, 61)
• Ch. 4 (69-72)