Assume that you are working with an Antacid tablet that contains 550mg CaCO3 and 110mg Mg(OH)2. Each tablet weighs 745mg.
Part A step 1. Determine the amount of tablet powder that would need to be weighed to give you 1000mg of CaCO3.
Part A Step 3. How much CaCO3 is in the 20 ml portion?
Part A Step 4. How much EDTA is needed for one titration? Given that each mL of EDTA is equivalent to 5.004 mg of CaCO3.
If the tablets (tablet powder) actually contain both CaCO3 and Mg(OH)2 â How much Mg(OH)2 was weighed in Part A Step 1 along with the CaCO3.
Part B Step1: In each ml of filtrate, how much (mg) of each, CaCO3 and Mg(OH)2, exist?
So how much filtrate would be equal to 120mg of CaCO3 and Mg(OH)2?
Part B Step 3: How much EDTA is needed for one titration? (Remember for the Ca present: each mL of EDTA is equivalent to 5.004 mg of CaCO3 and for the Mg present: each mL of EDTA is equivalent to 2.916 mg of Mg(OH)2.)
Assume that you are working with an Antacid tablet that contains 550mg CaCO3 and 110mg Mg(OH)2. Each tablet weighs 745mg.
Part A step 1. Determine the amount of tablet powder that would need to be weighed to give you 1000mg of CaCO3.
Part A Step 3. How much CaCO3 is in the 20 ml portion?
Part A Step 4. How much EDTA is needed for one titration? Given that each mL of EDTA is equivalent to 5.004 mg of CaCO3.
If the tablets (tablet powder) actually contain both CaCO3 and Mg(OH)2 â How much Mg(OH)2 was weighed in Part A Step 1 along with the CaCO3.
Part B Step1: In each ml of filtrate, how much (mg) of each, CaCO3 and Mg(OH)2, exist?
So how much filtrate would be equal to 120mg of CaCO3 and Mg(OH)2?
Part B Step 3: How much EDTA is needed for one titration? (Remember for the Ca present: each mL of EDTA is equivalent to 5.004 mg of CaCO3 and for the Mg present: each mL of EDTA is equivalent to 2.916 mg of Mg(OH)2.)
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Related questions
Question 1
A single dose of a certain antacid contains 250. mg of Mg(OH)2 and 300. mg of CaCO3. How many mmol of H+ can be neutralized by one dose of this antacid? Do not include units in your answer.
Question 2
What step is used to break the HCO3-/CO2 buffer system during the titration with NaOH?
| Stirring during the titration |
| Adding excess HCl then boiling |
| Crushing the antacid tablet |
| Adding phenolphthalein prior to the addition of any HCl |
Question 3
A 0.500 g antacid tablet is mixed with 50.00 mL of 0.100 M HCl then boiled. After cooling, 4.90 mL of 0.100 M NaOH is required to achieve a phenolphthalein end point. Calculate the neutralizing power of the antacid tablet in terms of mmol of H+/g of antacid. Do not include units in your answer.
Question 4
If calcium carbonate is the only active ingredient in the antacid in question #3, how many mg of calcium carbonate are there in a 0.500 g tablet? Do not include units in your answer.
