Name: ___________________________                                                                                   Molarity of Ice Tea

Guiding Question: What molarity of ice tea is the tastiest?

Standard: Chm.3.2.3 Infer the quantitative nature of a solution (molarity, dilution, and titration with a 1:1 molar ratio)

Materials: Cups, spoons, ice tea mix, weighing boats, balances.

Pre-Lab Questions:

1. In your own words define:

1. Concentrated solution: ___________________________________________________________

2. Dilute solution: _________________________________________________________________

3. Molarity: _____________________________________________________________________

2. In this lab, identify the solute and solvent.

3. You will make 500ml of iced tea for the trial you have. The gfm of iced tea is 180g/mol.

Calculate the number of moles of iced tea you need for each trial. Show an example calculation for your trial. Record your answer below and on the board.

4. Calculate the number of grams of ice tea you will need for each trial. Show an example calculation for your trial. Record your answer below and on the board.

Procedure:

1. Weight the amount of ice tea needed for your trial and place it in your big cup. Fill the cup to 500mL

2. Stir the ice tea to dissolve all the mix.

3. Pour a SMALL amount of iced tea into your testing cup. 

4. Taste it and rate it.(1: practically water, 10: way too strong)

5. Taste a SMALL amount of iced tea from each group and rate it.(Rinse between trials) 

Questions:

1. Which of your trials was concentrated? Which was dilute?

2. Were any of the solutions supersaturated? How would you know?

3. If you increased the moles of sugar, what would happen to the concentration? Why?

4. How would increasing the size of the container affect the Molarity?