Chemistry lab

Experiment 1Performing a Precipitation Reaction Experiment Inventory

EXPERIMENT 1: PERFORMING A PRECIPITATION REACTION

In this experiment, you will be forming a precipitate of calcium (calcium flouride). The reaction that you will be observing is:

PROCEDURE

1. Use the 10 mL graduated cylinder to measure and pour 10 mL of Sodium Fluoride (NaF) into a test tube.

2. Use the 10 mL graduated cylinder to measure and pour 3 mL of 1 M Calcium Acetate (Ca(C2H3O2)2) solution into the test tube. Gently stir the test tube with the glass stir rod to mix. Place the test tube in the test tube rack.

3. Observe the reaction for at least 60 minutes to ensure it completes. Take a picture of the initial solution during this period to facilitate your data observations. Pay particular attention to the solutions 1, 20, 35, and 60 minutes after the Calcium Acetate (Ca(C2H3O2)2) has been added to the test tube. Remember to include your name and lab access code handwritten in the background of the photo.

4. After 60 minutes have passed, take a picture of the final solution to facilitate your data observations. Remember to include your name and lab access code handwritten in the background of the photo.

Note: The precipitate formed can be more easily seen if the test tube is held up to the light. The precipitate will eventually settle to the bottom of the test tube.

5. Record all observations in the Observation section on the Experiment 1 Data Sheet. Make sure to submit the initial and final images along with your Post-Lab assignment to your instructor.

6. To clean up, rinse the small amount of precipitate down the drain with running water.

Materials 3 mL of 1 M Calcium Acetate (Ca(C2H3O2)2)

10 mL Sodium Fluoride (NaF)

*Camera (camera phone is fine)

*Tap Water

Labware 10 mL Graduated Cylinder

Test Tube

Pipette

Glass Stir Rod

Test Tube Rack

Note: You must provide the materials listed in *red.