Baking Soda And Vinegar Lab

Baking Soda and Vinegar Lab

Purpose:

Determine if mass is conserved in a chemical reaction.

Materials:

baking soda vinegar 4 dry beakers (or simply rinse and dry the same beaker before using it again)
1 digital balance
1 rubber band plastic wrap plastic weight boat (lid)

Procedure:

1. Measure the mass of a beaker, 10mL vinegar, and 10g baking soda.
2. Mix the compounds in the beaker and wait for the reaction to finish.
3. Record the mass of the beaker and its contents.
4. Determine the remaining mass of the chemicals in the beaker.
5. Measure the mass of a new beaker, a plastic weight boat, 10mL vinegar, and 10g baking soda.
6. Mix the compounds in the beaker, and immediately place the plastic boat over the beaker so that it acts as a lid, and wait for the reaction to finish.
7. Record the mass of the beaker, its contents, and the plastic boat.
8. Determine the remaining mass of the chemicals in the beaker.
9. Cut a sheet of plastic wrap large enough to cover the top of the beaker, with extra room so that it can be rubber banded to the sides of the beaker.
10. Measure the mass of a beaker, a rubber band, the sheet of plastic wrap, 10mL vinegar, and 10g baking soda.
11. Mix the compounds in the beaker, and immediately place the plastic wrap over the beaker and rubber band it to the sides so that it traps all of the contents of the beaker inside, and wait for the reaction to finish.
12. Record the mass of the beaker, its contents, the sheet of plastic wrap, and the rubber band.
13. Determine the remaining mass of the chemicals in the beaker.
14. Repeat steps 10-13 to obtain a second set of data, to amount to 4 reactions completed.

Analysis: Reaction
Beaker without contents
Mass of Baking Soda
Mass of Vinegar
Mass of Chemicals
#1
47.88g.
9.83g.
9.78g.
19.17g.
#2
47.71g.
9.93g.
9.93g.
16.24g.*
#3
47.79g.
9.98g.
9.94g.
19.92g.

*During Reaction #2 the reaction rose too quickly and some of the contents were lost.

The beakers weighed differently