Chemistry 12:  We started with a Mini Review  (4.1 to 4.3) , then we took notes on Acid and Base Equilibria in Water.  Unit 4 # 25-30 was assigned, and time was given to finish Lab 20B and prepare Lab 20G.  We made our 0.0500 M H2C2O4 solutions for Lab 20G.  Please have 20G prepared for next class.