Adobe LAB3-ALUMberkeman said:
It's best to print the Word doc to PDF and attach it directly. Links can be broken over time, and Word attachments can contain macros.MightyCatt said:
Got it, I will remember that. The original lab instructions contain safety information on a different page, these instructions are just for me to follow them step by step and so I don't let lost in the paragraphs of the original instructions.berkeman said:
The purpose of this lab is to synthesize alum (potassium aluminum sulfate) from aluminum foil and potassium hydroxide. This reaction demonstrates the principles of stoichiometry and the formation of a double salt compound.
The materials needed for this lab include aluminum foil, potassium hydroxide, distilled water, beakers, stirring rod, filter paper, funnel, hot plate, and a balance.
Safety precautions that should be taken during the lab include wearing goggles and gloves, as well as using caution when handling hot objects and chemicals. It is also important to work in a well-ventilated area and to follow proper disposal procedures for any waste materials.
The steps for the lab procedure are as follows: 1) Measure and record the mass of aluminum foil. 2) Dissolve the aluminum foil in a solution of potassium hydroxide and distilled water. 3) Heat the solution on a hot plate until it reaches a boil. 4) Filter the solution to remove any impurities. 5) Allow the solution to cool and crystallize. 6) Collect the alum crystals and determine their mass. 7) Calculate the percent yield of the reaction.
The expected outcome of the lab is to successfully synthesize alum and determine the percent yield of the reaction. The alum crystals should be white and have a defined shape. The percent yield should be close to 100%, indicating a successful reaction.