Adv. Chem - 9/10 - Glassware, Lab - 2.00g Precipitate

II. Lab - Can you make 2.00g of precipitate?

• Wash all glassware you will be using with soap and water. Rinse thoroughly with tap water. Do a final rinse with deionized water. Do NOT dry with paper towels.

• You know the amount of each reactant you need to produce 2.00g of product. Carefully obtain an amount close to those values, add them to separate beakers, and dissolve those salts with deionized (DI) water. Be sure to record the amounts in your procedures AND in your data section.

• Once your original samples are completely dissolved, pour one into the other. Then, repeatedly rince the empty beaker with DI, dumping the washings into the beaker with the precipitate. Discuss these steps in your procedures.

• Allow the solution with the precipitate to react for five to ten minutes, stirring occassionally. Be sure to rinse the stir rod back into the beaker when you remove it. Discuss these steps in your procedures.

• Filter the precipitate as shown by Mr. Hollis. Constantly wash the sides of the beaker to make sure all precipitate gets transferred. Discuss these steps in your procedures.

• Store your funnel/filter paper/erlenmeyer flask in your cabinet. Come back during ACS to see if you need to run it through the filter again. Discuss these steps in your procedures.

Quiz next class: Covalent and ionic nomenclature. If you want me to check practice problems, bring them in during ACS or before or after school.