Chemical Reaction Postlab Report
Part A: Equivalence Amounts
Plastic Cup A Experiment
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Measured Mass of NaHCO3
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Measured Mass of H3C6H5O7
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Measured Mass of CO2
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1.08g
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0.71g
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0.56g
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*The mass of carbon dioxide is "indirectly" measured acid recorded in Box "6" in Data Section for Cup A.
1. Show that the equivalence amount of citric acid for 1.00 g of sodium bicarbonate is 0.76 g.
2. Calculate the theoretical yield of carbon dioxide from 1.00 g of sodium bicarbonate.
3. What is the actual yield in this cup A experiment according to your data?
4. Calculate the percentage yield in the plastic cup A experiment.
Plastic Cup B Experiment
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Measured Mass of NaHCO3
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Measured Mass of H3C6H5O7
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Measured Mass of CO2
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1.72g
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1.50g
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0.83g
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*The mass of carbon dioxide is "indirectly" measured acid recorded in Box "6" in Data Section for Cup B.
5. Show that the equivalence amount of citric acid for 2.00 g of sodium bicarbonate is 1.52 g,
6. Calculate the theoretical yield of carbon dioxide from 2.00 g of sodium bicarbonate.(5 pts)
7. What is the actual yield in this cup B experiment according to your data?
8. Calculate the percentage yield in the plastic cup B experiment.
Part B: Limiting Reactants
Plastic Cup C
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Measured Mass of NaHCO3
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Measured Mass of H3C6H5O7
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Measured Mass of CO2
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1.97g
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0.82g
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0.53g
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*The mass of carbon dioxide is "indirectly" measured acid recorded in Box "6" in Data Section for Cup C.
9. Determine which reactant is the limiting reactant in the plastic cup C. Describe your reasoning.
10. Calculate the theoretical yield of carbon dioxide in the plastic cup C.
11. What is the actual yield in this cup C experiment according to your data?
12. Calculate the percentage yield in the plastic cup C experiment.
Plastic Cup D
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Measured Mass of NaHCO3
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Measured Mass of H3C6H5O7
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Measured Mass of CO2
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0.95g
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1.23g
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0.62g
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*The mass of carbon dioxide is "indirectly" measured acid recorded in Box "6" in Data Section for Cup D.
13. Determine which reactant is the limiting reactant in the plastic cup D. Describe your reasoning.
14. Calculate the theoretical yield of carbon dioxide in the plastic cup D.
15. What is the actual yield in this cup C experiment according to your data?
16. Calculate the percentage yield in the plastic cup D.
17. Compare the percentage yield for four reactions. Describe the difference and the similarities accroding to your data.