1. Unit Twelve Acids and Bases

2. Buffers Any solution that resists a change in pH
Contains a weak acid and its conjugate base
Buffers are used to maintain nearly constant pH in commercial and laboratory products
The choice of buffer is determined by the final desired pH of the solution being prepared
A buffer consisting of a weak acid (HB) and its conjugate base (B-) can react with a strong base (OH_) or a strong acid (H+)

3. Brønsted-Lowry System
Conjugate acid-base pairs – two substances related to each other by the transfer of a proton
Acid = proton donor
Base = proton acceptor
Conjugate Base = what remains after an acid has donated its H+
Conjugate Acid = what remains when a base has accepted a H+

4. A B CA CB A B CA CB B A CB CA A B CA CB A B CB CA

5. Retests until Tuesday
Monday – Computer Lab
Tuesday and Wednesday – Titration Lab
Thursday – Extra Credit Lab
Friday – Test (If gone need to be completed before you leave)