1. Pour water in a clear cup until it is 2/3 filled. Add 1/8 of a teaspoon of baking soda into the water. This will serve as your 0.2% solution of bicarbonate.

∙ What is the baking soda for?

1. Add 1 drop of dilute liquid soap to the bicarbonate solution. Avoid suds. If your solution has suds, dilute it with more bicarbonate solution.

∙ What is the purpose of adding a drop of dilute liquid soap into the solution?

Biology Experiment 3:
post lab question.
1. what is the purpose of determining the pH of the acetic and the sodium bicarbonate solution before testing the other household substances?
2. compare and contrast acids bases in term of their H+ ion and OH¯ ion concentrations.
3. name two acids and two bases you often use.

Considering the link between the light-dependent and thelight-independent reactions, why does the sodium bicarbonatesolution cause more disks to float? Why don't the disks float inthe H2O vacuum solution?