Question

Antacids are used to relieve heartburn and sour stomach. Products like these commonly contain substances such as Mg(OH)2, Al(OH)3, and CaCO3. What is it about these substances that soothe a burning stomach? (2 points)

Answer 1

They all react with acids.

Step-by-step explanation:

Thus, they decrease the concentration of stomach acid and provide heartburn relief.

The equations for the reactions are:

1. Mg(OH)₂ + 2HCl ⟶ MgCl₂ + 2H₂O
2. Al(OH)₃ + 3HCl ⟶ AlCl₃ + 3H₂O
3. CaCO₃ +2HCl ⟶ CaCl₂ + H₂O + CO₂