Activity 2 1/20/2011 Antacids

Write the formula for Tums? How does Tums chemically react with water and stomach acid?
CaCO3-->Ca+CO3
CO3+H----->HCO3+H------>H2CO3--------->H2O+CO2
Carbonate      Bicarbonate      Carbonic <------- Carbon dioxide gas
                      Baking Soda      Acid

How many Tums are needed to neutralize a can of coke?

Quite a bit of the tums to make the pH changes.