Gas Law Stoichiometry Through Airbag Simulation. The purpose of this lab is to determine the correct ratio of baking soda and vinegar that leaves leaves no appreciable amount of either reactant leftover and yet fully inflates the bag without bursting.

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Gas Law Stoichiometry Through Airbag Simulation

Purpose- The purpose of this lab is to determine the correct ratio of baking soda and vinegar that leaves leaves no appreciable amount of either reactant leftover and yet fully inflates the bag without bursting.

Materials- Water, ziplock bag, graduated cylinder, scale, baking soda, vinegar, goggles, apron, thermometer, and calculator.

Variables-

Dependent- Amount of CO2

Independent- Vinegar

Controlled- Baking soda

Procedure-

  1. Calculate how much baking soda should be used
  2. Fill the bag with water and empty into graduated cylinder to find the volume of the bag
  3. Measure out amount of calculated baking soda
  4. Pour first trial amount of vinegar into bag and put it in one corner
  5. Add baking soda and put it in another corner
  6. Close the bag
  7. Mix the two and shake the bag
  8. Repeat with different amounts of vinegar
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Data-

Calculations-

1.0036(1.4)=n(.0821)(297)                  V= 1460 mL        T=297 K       P=1.0036 atm  

1.405=24.38n

n=.0575 CO2

.0575 moles CO2 x 84.01 grams baking soda

------------------------------------------------------        = 4.835 grams baking soda

                               1 mole

Conclusions - We demonstrated that although it is possible to calculate the amount of solute needed to react it is not possible to determine the amount of solvent needed ...

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