Baking Soda

Baking Soda (NaHCO3) Lab (Stoichiometry) - Physical Science

Name: __________________________________________________

Purposes: 1. Calculate theoretical mass of NaCl based on a known mass of NaHCO3. 2. Experimentally determine the actual mass of NaCl produced. 3. Calculate the percent yield for your experiment.

Reaction Equation: NaHCO3(s) + HCl(aq) ( NaCl(s) + CO2(g) + H2O(l)

Materials: safety glasses baking soda (NaHCO3) 1 M HCl and dropper 500 ml Pyrex flask hot plate

Procedure:

1. Find the mass of the 500 ml Pyrex flask. Record this mass in the Data Tables.
2. Add one teaspoon of baking soda to the flask, and record the total mass in the Data Table.
3. Use the dropper to drip HCl into the flask. Add HCl until the fizzing ceases.
4. Set the flask on a hot plate and slowly boil off the liquid until only table salt (NaCl) remains in the flask.
5. Let the beaker cool for five minutes, then weigh it again and record the mass in the Data Table.
6. Clean up by rinsing your equipment with water and wiping dry with a paper towel.

Data Tables:

Calculations:

1. Balanced Equation:

2. Find the theoretical mass of NaCl that would be produced if your experiment were perfect.

3. Find the percent yield for your experiment. Actual mass of NaCl x 100 = l Theoretical mass of NaCl

If your percent yield is greater than 100%, provide at least one possible source of error that might have caused you to get more than 100% yield.

Baking Soda (NaHCO3) Lab (Stoichiometry) - Chemistry

Name: __________________________________________________

Purposes: 1. Calculate theoretical mass of NaCl based on a known mass of NaHCO3. 3. Experimentally determine the actual mass of NaCl produced. 3. Calculate the percent yield for your