Gas Bag/Limiting Reactant
Purpose: To determine the limiting reactant and theoretical yield of carbon dioxide.
1. Procedure: Fill a ziplock bag with water.
2. Record total volume using graduated cylinder. This is the total volume of gas you want to create.
3. Calculate (below) the amount of NaHCO3 you would need to add to 45.0mL acetic acid, CH3COOH, to create that volume of CO2 (1000mL=1L), (density of CO2 = 1.997 g/L)
Calculation(show all work): NaHCO3+CH3COOH→CH3COONa+H2O+CO2
______mLCO2 / g NaHCO34. Measure out that amount of NaHCO3 and 45.0mL acetic acid.
5. Put the NaHCO3 into the corner of your bag and twist the corner around the powder.
6. Tilt bag, pour acetic acid into opposite corner, remove air, seal.
7. Untwist the corner and allow the two substances to mix. Hold bag over the sink.
8. Record observations below.
Observations:
Data Table: (hundredths place)
Volume of bag______mL
Mass of NaHCO3______g
Volume of CH3COOH______mL
Analysis:
1) Which was the limiting reactant (rxt that was used up)?
2) Which was the excess reactant (rxt left over)?
3) Did the bag fill completely with CO2?
4) What would happen if more NaHCO3 was added? More CH3COOH?
5) Calculate the volume of CO2 that would be made from the reaction of 23.40g NaHCO3 and 60.0mL acetic acid. (Density of CH3COOH= 1.01g/mL). (DCO2= 1.997g/L)
Gas Bag/Limiting Reactant
Purpose: To determine the limiting reactant and theoretical yield of carbon dioxide.
1. Procedure: Fill a ziplock bag with water.
2. Record total volume using graduated cylinder. This is the total volume of gas you want to create.
3. Calculate (below) the amount of NaHCO3 you would need to add to 45.0mL acetic acid, CH3COOH, to create that volume of CO2 (1000mL=1L), (density of CO2 = 1.997 g/L)
Calculation(show all work): NaHCO3+CH3COOH→CH3COONa+H2O+CO2
______mLCO2 / g NaHCO34. Measure out that amount of NaHCO3 and 45.0mL acetic acid.
5. Put the NaHCO3 into the corner of your bag and twist the corner around the powder.
6. Tilt bag, pour acetic acid into opposite corner, remove air, seal.
7. Untwist the corner and allow the two substances to mix. Hold bag over the sink.
8. Record observations below.
Observations:
Data Table: (hundredths place)
Volume of bag______mL
Mass of NaHCO3______g
Volume of CH3COOH______mL
Analysis:
1) Which was the limiting reactant (rxt that was used up)?
2) Which was the excess reactant (rxt left over)?
3) Did the bag fill completely with CO2?
4) What would happen if more NaHCO3 was added? More CH3COOH?
5) Calculate the volume of CO2 that would be made from the reaction of 23.40g NaHCO3 and 60.0mL acetic acid. (Density of CH3COOH= 1.01g/mL). (DCO2= 1.997g/L)