Antacid Information Table FS/2014
Antacid | Active Ingredients (mg) | Recommended Minimum Dosage | Price($) / (#tablets) |
Mylanta | 700 mg CaCO3 + 300 mg Mg(OH)2 | 1 tablet | $4.93 / 70 tablets |
Tums* | 500 mg CaCO3 | 1 tablet | $3.99 / 150 tablets |
Rolaids | 550 mg CaCO3 + 110 mg Mg(OH)2 | 1 tablet | $3.44 / 150 tablets |
Equate | 160 mg Al(OH)3 + 105 mg MgCO3 | 1 tablet | $3.82 / 100 tablets |
Maalox | 600 mg CaCO3 | 1 tablet | $4.77 / 85 tablets |
Baking Soda* | Pure NaHCO3 = 1000 mg | 0.5 tsp. or 1.0 gm. | $ 0.56 / 16 oz. |
* do these by direct titration also
Standard acid and base used
Section(s) | HCl molarity | NaOH molarity |
Titrations
Do either Gp I or Gp II-3 antacids assigned by TA. Obtain data for the other 3 antacids from another group.
Do all 3 as back titrations and 1 as a direct titration (either Tums or NaHCO3, depending on your assigned group)
Report
Objective, Procedure, Results, Conclusions
Tables
Basic cost & composition data
Titration data, calculated results
Calculate percent yield as mg HCl required to titrate/theoretical mg HCl required to titrate x 100%
e=chemical efficiency = percent yield/100
Graphs
Results expressed as effectiveness in mg HCl neutralized per dollar and as mg HCl per tablet