Question

1. True or False: It is important to ensure that the baking soda does not come in contact with vinegar until the bottle is tightly closed to ensure that all gaseous product is captured.
2. True or False: Alternatively, we can measure the volume of the gas inside the plastic bottle and use it to determine the number of moles of carbon dioxide produced by using the ideal gas equation.
3. True or False: It is important to make sure that the water inside and outside of the jar is of the same level before taking note of the volume of carbon dioxide. This ensures that the pressure inside and outside of the jar is the same.
4. True or False: In the performed experiment, the limiting reagent is NaHCO3.
5. True or False: Aside from carbon dioxide, other products of the reaction are water and sodium acetate, CH3COONa.
6. True or False: The balanced chemical equation to represent the reaction is:
NaHCO3 + CH3COOH → CH3COONa + H2O + CO2
7. True or False: We can use the volume of the vinegar used to calculate for the theoretical yield of the reaction.

For items 8 to 12, refer to the following lab data. Show your complete solution for all the questions.

Mass of NaHCO3 sample (g): 1.20 g
Volume of carbon dioxide produced (mL): 250 mL

8. What is the molecular mass of NaHCO3?
9. How many moles of NaHCO3 are in the sample?
10. Theoretically, how many moles should be produced from 1.2 grams of baking soda?
11. How many moles of carbon dioxide is produced in the reaction? (Use the ideal gas equation, PV=nRT, for the calculation assuming P= 1 atm; T=298 K and R=0.0821 L-atm/mol-K)
12. What is the percentage error for the experiment?

Answer 1

1.true

2.false

3.true

4.i think false

5.false

6.false

7 . true

8.

Answer 2

1.true
2.false
3.true
4.false
5.false
6.false
7.true