Question

From your calculations, which reaction experiment had the closest to stoichiometric quantities? How many moles of NaHCO3 and HC2H3O2 were present in this reaction?

a. Experiment 1; 2 moles of NaHCO3 and 1 mole of HC2H3O2
b. Experiment 2; 1 mole of NaHCO3 and 2 moles of HC2H3O2
c. Experiment 3; 2 moles of NaHCO3 and 2 moles of HC2H3O2
d. Experiment 4; 1 mole of NaHCO3 and 1 mole of HC2H3O2

Answer 1

The experiment with the closest to stoichiometric quantities is experiment 4, which involved 1 mole of NaHCO3 and 1 mole of HC2H3O2, perfectly reflecting the 1:1 stoichiometric ratio required by the balanced chemical equation for their reaction.

Step-by-step explanation:

When comparing reaction experiments to find the one with the closest to stoichiometric quantities, we need to refer to the balanced chemical equation of the reaction between sodium bicarbonate (NaHCO3) and acetic acid (HC2H3O2). The balanced chemical equation is as follows:

NaHCO3 + HC2H3O2 → NaC2H3O2 + H2O + CO2

This indicates a 1:1 molar ratio between NaHCO3 and HC2H3O2. Therefore, the experiment with stoichiometric quantities would be the one that also reflects a 1:1 molar ratio.

Option d, which states one mole of NaHCO3 was present with one mole of HC2H3O2, matches this stoichiometic ratio and thus would be the experiment closest to stoichiometric quantities.

Option d, Experiment 4; 1 mole of NaHCO3 and 1 mole of HC2H3O2

Answer 2

In this experiment, the quantities of NaHCO₃ and HC₂H₃O₂ are in stoichiometric proportions, resulting in the closest match to the balanced chemical equation.

The correct answer is: c. Experiment 3; 2 moles of NaHCO₃ and 2 moles of HC₂H₃O₂

Step-by-step explanation:

The term "reaction" has several meanings, depending on the context in which it is used. It can refer to a response to a stimulus, a chemical process, or a physical or emotional response. In general, a reaction is a response to something that has happened or something that has been experienced.

It can be a reverse movement or tendency, an action in a reverse direction or manner, or a response that reveals a person's feelings or attitude. In the context of chemistry, a reaction is an occasion when two or more substances react with and change each other.

The correct answer is: c. Experiment 3; 2 moles of NaHCO₃ and 2 moles of HC₂H₃O₂