Experiment 4 EDF

E x p e r i m e n t 4 P a g e | 1

Experiment 4 – Synthesis: Preparation of Alum from Waste Aluminum Pop Cans

EDF (Part 1)

Complete page 1 and the all sections shaded green on pages 2 and 3 then submit 24 hours

BEFORE the start of your lab session

Question: What question are you trying to answer in this experiment?

How is waste aluminum metal converted into potassium aluminum sulphate dodecahydrate

KAl(SO4)2•12H2O (alum)?

Glassware and equipment (include quantities)

Apparatus and Buchner

Funnel

Small Tub 1 Ice bath

Stirring Rod 2 Mixing solutions to maintain even composition

Hot Plate 1 Heating up solution

Watch Glass 1 Holding crystals

Oven Mitts 1 Holding hot equipment and/or glassware

Bunsen Burner 1 Checking if potassium ions are present

Petri dish and cover 1 Holding crystals

Spatula 1 Scooping small amounts of solids to test tube

9M Sulfuric Acid 20mL

Deionized Water Approx.

110 mL

50% Chilled Water/

Ethanol

10mL

Barium Solution 1 drop

1.5 M KOH 40mL

Ammonia Few drops

Aluminum 0.8g

Aluminon 2 drops