Each Rolaid tablet contains 550mg of calcium carbonate and 110mg of magnesium hydroxide. Kroger Extra Strength antacid tablets contain 750mg of calcium carbonate per tablet. What is the neutralizing ability per gram for each tablet? Your answer should be in units of mol/g.
I'm totally lost on how to even solve this problem, I feel like I don't have enough information. Please help!
To solve this problem, we need to calculate the neutralizing ability per gram for each tablet.
Neutralizing ability is the number of moles of acid a substance can react with (in this case, calcium carbonate and magnesium hydroxide) per gram of substance.
We have the following information:
- Rolaid tablet contains 550mg of calcium carbonate and 110mg of magnesium hydroxide.
- Kroger Extra Strength antacid tablets contain 750mg of calcium carbonate per tablet.
Step 1: Calculate the number of moles of calcium carbonate in each tablet.
To do this, we need the molar mass of calcium carbonate, which is 100.09 g/mol.
For Rolaid tablet:
Number of moles of calcium carbonate = Mass of calcium carbonate / Molar mass of calcium carbonate
= 550mg / 100.09 g/mol
For Kroger Extra Strength antacid tablet:
Number of moles of calcium carbonate = Mass of calcium carbonate / Molar mass of calcium carbonate
= 750mg / 100.09 g/mol
Step 2: Calculate the number of moles of magnesium hydroxide in each tablet.
To do this, we need the molar mass of magnesium hydroxide, which is 58.32 g/mol.
For Rolaid tablet:
Number of moles of magnesium hydroxide = Mass of magnesium hydroxide / Molar mass of magnesium hydroxide
= 110mg / 58.32 g/mol
Step 3: Calculate the neutralizing ability per gram for each tablet.
To do this, divide the number of moles of calcium carbonate/magnesium hydroxide by the mass of the tablet.
Neutralizing ability per gram of Rolaid tablet:
Neutralizing ability = (Number of moles of calcium carbonate + Number of moles of magnesium hydroxide) / Mass of Rolaid tablet
Neutralizing ability per gram of Kroger Extra Strength antacid tablet:
Neutralizing ability = Number of moles of calcium carbonate / Mass of Kroger tablet
Step 4: Convert the answer to units of mol/g.
I hope this explanation helps you solve the problem!