You are working in an analytical chemistry laboratory as a technician. During an inventory check, you find two reagent bottles with incomplete labels attached. Both reagents have only the concentration labeled, 0.5M, but are missing the chemical name. From the chemical list, only two chemicals are not accounted for: sodium carbonate and sodium bicarbonate. You recall from the general chemistry courses you took in college, both chemicals react with HCl to form CO2 (carbon dioxide) gas and water. The only difference between sodium carbonate and sodium bicarbonate is the amount of CO2 produced during the reaction. Since the CO2 production is the only component of the reaction that would cause a significant change in pressure, the pressure measurements of the reactions of both unknown chemicals with HCl can provide a direct link to the stoichiometry of the CO2. Your job is to design and implement an experiment to identify each unknown compound using the pressure measurements before and after each reaction. Designing an experiment for identifying the unknown solutions as either sodium carbonate or sodium bicarbonate requires several chemical principles. 1. Nomenclature - What are the chemical formulas of sodium carbonate and sodium bicarbonate? 2. Writing balanced equations between sodium bi-carbonate or sodium carbonate and HCl 3. Gas Laws - how is pressure related to stoichiometry, specifically the moles of a gas? 4. Job's Method - how will the reaction stoichiometry be studied by systematically changing the proportion between reactants