# Antacid Effectiveness_ Which is more cost effective; Milk of by pptfiles

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```									Antacid Effectiveness: Which is more effective; Milk of Magnesia or Tums?

Milk of Magnesia           Tums
Active Ingredient              Mg(OH)2               CaCO3
Active Ingredient per unit     400 mg / teaspoon     1000 mg / tablet
Recommended dose                2 teaspoons           2 tablets

We can compare the effectiveness of these antacids by figuring out which one can neutralize more
grams of stomach acid (HCl) per dose. Use the information above to follow the steps below in order to

Milk of Magnesia
Tums
1) Write out the complete equation for the
neutralization of HCl by this antacid:                1) Write out the complete equation for the
neutralization of HCl by this antacid:

2) Calculate how many grams of the active
ingredient are in each dose:                          2) Calculate how many grams of the active
ingredient are in each dose:

3) Convert the number of grams used to
moles                                                 3) Convert the number of grams used to
moles

4) Use stoichiometry to relate the moles of
antacid to moles of HCl                               4) Use stoichiometry to relate the moles of
antacid to moles of HCl

5) Convert moles of HCl to grams of HCl                  5) Convert moles of HCl to grams of HCl

Which antacid can neutralize more HCl per dose? __________________________

What other factors might you look at to choose an antacid?

Which antacid might work the fastest, based on your knowledge of kinetics? __________________

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