CHE 110L Lecture Notes - Lecture 4: Equivalence Point, Active Ingredient, Molar Concentration

• School: Quinnipiac University
• Department: Chemistry
• Course: CHE 110L
• Professor: Stephen Madison

Document Summary

The purpose of this lab was to determine the neutralization capacity of commercial antacid tablets using the method of back-titration. The procedure for this lab can be found on pages 61-63 in general chemistry che110l. Modification: only used one type of tablet for titration, not two. Carbon copies of data tables have been attached to the back of this lab report. 1st & 2nd antacid: (0. 1066 m) x (0. 05000 l) = 0. 005330 mol hcl. 0. 005330 mol hcl x 1000 mmol hcl = 5. 330 mmol hcl. 1 mol hcl: # mmol naoh used. 1st antacid: (0. 1047 m) x (0. 03055 l) = 0. 003199 mol naoh. 0. 003199 mol naoh x 1000 mmol naoh = 3. 199 mmol naoh. 2nd antacid: (0. 1047 m) x (0. 02940 l) = 0. 003078 mol naoh. 0. 003078 mol naoh x 1000 mmol naoh = 3. 078 mmol naoh. 1 mol naoh: # mmol hcl reacted with sample. 3. 199 mmol naoh = 3. 199 mmol excess hcl.