How Antacid Works, What Chemical Reactions Does it Create

Antacids are weak bases. As learned in chemistry, when a base is mixed with an acid a neutralization ( A type of double displacement ) reaction occurs. This is because bases are the opposite of acids, when an antacid is consumed it goes into the stomach and creates a chemical reaction lowering the acidity and making stomach acid less corrosive and damaging. This is how Antacids work chemically.

Common chemical recipes for making antacids are Sodium Bicarbonate NaHCO3, Calcium Carbonate CaCO3, Magnesium Hydroxide Mg(OH)₂, Magnesium Carbonate MgCO₃ and Aluminum Hydroxide Al(OH)3.
As an example, the chemical reaction created when Aluminum Hydroxide neutralizes HCI is
Mg(OH)2(s) + 2 HCl(aq) -----> MgCl2(aq) + 2 H2O(l)

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