1. Acids and Bases

2. HA H + + A - HCL H + + CL - CH 3 COOH H + + CH 3 COO -

3. Strong Weak

4. 0.003M HCl 9M HNO 3 7M CH 3 COOH ethanoic acid or acetic acid 5% ethanoic acid (vinegar) Use dilute or concentrated and weak or strong to describe the acids above.

5. 2H 2 O H 3 O + + OH - [H + ] [OH - ] [H 2 O] H 2 O H + + OH - K c = K w = [H + ] [OH - ] = 10 -14

6. [H + ] for pure water is 1 X 10 -7 K w = [10 -7 ] [10 -7 ] = 10 -14 pH is -log [H + ] So the pH of pure water is 7

8. HA H + + A - H + + OH - H 2 O during titration Strong/weak acids cannot be differentiated by titration.

9. Mohr burette Remember to: Remove bubbles from the valve area Record data as you titrate including uncertainties What is the second burette for? Flush your burette with distilled water when finished

10. Acidic pH 0-8.2 Basic pH 8.2-12 Phenolphthalein