1. Write a balanced equation for the reaction of the active ingredient in Tums with excess...

 

 

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1. Write a balanced equation for the reaction of the active ingredient in Tums with excess acid. See Table 17.1. 2. Identify the two most common anions present in antacids. 3. a. How much time should be allowed for the titrant io drain from the buret wall before a reading is made? 16 b. Experimental Procedure, Part B.2. Bromophenol blue is the indicator used in delecting the endpoint for the antacid analysis in this experiment. What is the expected color change at the endpoint? 4. a. How many moles of stomach acid would be neutralized by one tablet of Tums Ultra 1000 that contains 1000 mg of calcium carbonate? CacO, (ag) +2 H,0(ag) - Ca"(ag) + CO(g) + 3 H,O) b. Assuming the volume of the stomach to be 1.0 L what will be the pH change of the stomach acid resulting from the ingestion of one Tums ultra 1000 tablet that contains 1000 mg of cal- cium carbonate. TUMS Table 17.1 Common Antacids Principal Active Ingredient(s) Formulation Commercial Antacid CaCO, CaCO, Mg(OH); MgCO,, Al(OH), Mg(OH),, Al(OH), NaHCO, citric acid, aspirin Mg(OH): Mg(OH), Mg(OH)2, Al(OH), MGCO, Al(OH), Tablet Tums, Titralac, Chooz, Maalox Rolaids, Di-Gel, Mylanta Gaviscon Extra Strength Gelasil, Tempo Tablet Tablet Tablet Alka-Seltzer Tablet Tablet Phillips' Milk of Magnesia Phillips' Milk of Magnesia Mylanta Extra Strength Gaviscon Extra Strength Liquid Liquid Liquid 1. Write a balanced equation for the reaction of the active ingredient in Tums with excess acid. See Table 17.1. 2. Identify the two most common anions present in antacids. 3. a. How much time should be allowed for the titrant io drain from the buret wall before a reading is made? 16 b. Experimental Procedure, Part B.2. Bromophenol blue is the indicator used in delecting the endpoint for the antacid analysis in this experiment. What is the expected color change at the endpoint? 4. a. How many moles of stomach acid would be neutralized by one tablet of Tums Ultra 1000 that contains 1000 mg of calcium carbonate? CacO, (ag) +2 H,0(ag) - Ca"(ag) + CO(g) + 3 H,O) b. Assuming the volume of the stomach to be 1.0 L what will be the pH change of the stomach acid resulting from the ingestion of one Tums ultra 1000 tablet that contains 1000 mg of cal- cium carbonate. TUMS Table 17.1 Common Antacids Principal Active Ingredient(s) Formulation Commercial Antacid CaCO, CaCO, Mg(OH); MgCO,, Al(OH), Mg(OH),, Al(OH), NaHCO, citric acid, aspirin Mg(OH): Mg(OH), Mg(OH)2, Al(OH), MGCO, Al(OH), Tablet Tums, Titralac, Chooz, Maalox Rolaids, Di-Gel, Mylanta Gaviscon Extra Strength Gelasil, Tempo Tablet Tablet Tablet Alka-Seltzer Tablet Tablet Phillips' Milk of Magnesia Phillips' Milk of Magnesia Mylanta Extra Strength Gaviscon Extra Strength Liquid Liquid Liquid