Prelab: Percent Yield of Potassium Aluminum Sulfate Lab
1. In this laboratory session, you will need to prepare your own solution of potassium
hydroxide. Preparation of 25 mL of ~3 M KOH
You are to do the math to figure out how many grams of potassium hydroxide are
needed. Then you are to write instructions on how to prepare this solution. This is only
an approximation.
2. You will be handling a hygroscopic material today in lab. Define hygroscopic and
then make a check list of things to remember when handling a hygroscopic substance:
3. Calculate the theoretical yield of potassium aluminum sulfate dodecahydrate if you
are given 1.00 grams of aluminum foil as the limiting reactant. Show all work and set
ups before doing the calculation.
(This requires careful calculation and stoichiometry.)
Prelab: Percent Yield of Potassium Aluminum Sulfate Lab
1. In this laboratory session, you will need to prepare your own solution of potassium
hydroxide. Preparation of 25 mL of ~3 M KOH
You are to do the math to figure out how many grams of potassium hydroxide are
needed. Then you are to write instructions on how to prepare this solution. This is only
an approximation.
2. You will be handling a hygroscopic material today in lab. Define hygroscopic and
then make a check list of things to remember when handling a hygroscopic substance:
3. Calculate the theoretical yield of potassium aluminum sulfate dodecahydrate if you
are given 1.00 grams of aluminum foil as the limiting reactant. Show all work and set
ups before doing the calculation.
(This requires careful calculation and stoichiometry.)