Stoichiometry Balloon Races
1. Write the balanced equation for the reaction of acetic acid and sodium bicarbonate.
2. Compare the flasks to each other.
Flask Moles of acetic Mass of Compare Size Moles of Ratio of moles of Which reactant is
acid (moles) sodium To previous sodium acetic completely used?
bicarbonate balloon (smaller, bicarbonate acid/moles of
(g) bigger, same) sodium
1 0.02 0.50
2 0.02 1.00
3 0.02 1.50
4 0.02 2.00
5 0.02 2.50
6 0.02 3.00
Name ___________________________________ Period _______
Balloon Races Lab Report Sheet
1. Which flasks appeared to produce the most CO2?
2. Which flasks appeared to produce the same amount of CO2?
3. In which flasks was sodium carbonate the limiting reactant?
4. In which flask was acetic acid the limiting reactant?
5. How many moles of gas were produced in each flask? (Show your calculation for flask #1)
6. Explain how these numbers match, or don’t match, your qualitative observations.
7. What is the maximum theoretical yield that you could have obtained using your data? Show your work and give flask
8. How would you determine your maximum actual yield? Explain your procedure, show the measurement needed, and show
all equations and steps that you would use. Make sure you tell us which flask you would use.
9. Explain how the experimental results qualitatively and quantitatively would change if sodium carbonate were used instead
of sodium bicarbonate. Start by write the balanced reaction with sodium carbonate.