Item #: PF2046
In this lab experience, students will determine the amount of sodium bicarbonate to add to acetic acid to produce a specific amount of CO2 gas. They will use the results to determine which reactant is the limiting reagent and which is in excess. Students will observe that no matter how much sodium bicarbonate is added, at some point it becomes the excess reagent and there is not enough acetic acid to react. As a result there is a limited amount of carbon dioxide gas that can be produced. When smaller amounts of sodium bicarbonate are added, it is the limiting reagent and the acetic acid is the excess. When the moles of sodium bicarbonate exceed the moles of acetic acid, the designations switch and acetic acid becomes the limiting reactant.
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