Objective: Quantify titration equivalence points. Apply the concepts of mole and stoichiometry.
Represent solutes and reactions in aqueous solutions.
Question: In our Analysis of Antacid lab, we started with a known concentration and volume of
hydrochloric acid that was partially neutralized by the active ingredient of an antacid tablet according to
the following equation:
2 HCI (aq) + CaCO, (s)→ CaCl₂ (aq) + CO₂ (g) + H₂O (1)
The remaining acid was then titrated with a known concentration of NaOH.
Use this student's lab data to calculate the moles of acid neutralized by the antacid tablet and the
mass of the active ingredient required:
Concentration of HCI
Volume of HCI added
Mass of antacid tablet.
Concentration of NaOH
Volume of NaOH
1.0755 M
25.00 mL
1.503 g
1.0031 M
16.80 mL
Include definitions, explanations, discussion of your problem-solving process.
