CO2 and Mass

1
CO2 and Mass
In this lab, you will use chemistry to determine
the mass of CO2. You will do this by mixing
baking soda and vinegar together. The reaction
will produce CO2 and the balloon will trap the
CO2 inside. Youll weigh it before and after the
reaction. Then release the CO2 by popping the
balloon and recording the final weight.
2
Materials

• 1 125 mL flask
• 1 large balloon
• 1 pin (or scissors)
• 1 microspoon spatula
• 40 mL of baking soda
• 80 mL of vinegar
• 50 mL beaker
• Scale
• Metal pie tin
• Safety glasses
• Worksheet

3
Measure 40 mL of baking soda in the 50 mL beaker.
Use the microspoon to put the baking soda inside
the balloon.
4
Try keeping the baking soda inside the balloon.
5
Pour 80 mL of vinegar into a 250 mL flask and
attach the balloon containing the baking soda to
the flask. Be careful not to mix the baking soda
with the vinegar.
6
Place the tray on the scale, zero it out by
holding down the on button. Now place the flask
on the scale. Record the weight in grams in the
first column in Table 1.
7
Release the baking soda from the balloon into the
vinegar. Hold the mouth of the balloon as the
balloon expands.
8
Place the inflated balloon and flask on the
scale. Weigh and record the mass in grams and
record in the 2nd column of Table 1.
9
Release the CO2 by piercing the balloon.
10
Place the balloon and flask on the scale. Record
the weight in grams in the 3rd column in Table 1.
11
Determine the mass of the gas and record the data
in Table 1.
Clean up you lab station by washing out the
flask, throwing out the balloon, and returning
materials from where you picked them up.