2. Describe what is happening.
The antacid is a base and neutralizes the hydrochloric acid in the stomach. To neutralize stomach acid, you don't want too strong of a base so sodium bicarbonate, NaHCO3, will work just fine.
3. What is the purpose of the reaction.
The purpose of antacids is to stop heart burn or inflammation of the throat. Antacids also help relieve symptoms caused by ulcers. They also help with curing indigestion (dyspepsia).
The picture below is a picture of what happens during acid reflux. When the muscle at the top of the stomach is open. Acid from the stomach enters the esophagus or the throat. This is painful, because the throat isn't protected against acid, like the stomach is protected.
4. The Chemical Equations
Word Equation: hydrochloric acid + sodium bicarbonate produces salt plus water plus carbon dioxide.
Chemical Equation: HCl + NaHCO3 --> NaCl + H2O + CO2
Type of Reaction: This is a Neutralization Reaction
5. Hazards involved with the chemicals.
Most people who take antacids do not develop any side-effects. However, the carbon dioxide (CO2) is a gas and this is why taking an antacid may make you gassy. Many antacids, such as such as Maalox, Mylanta, Rolaids and Tums, contain calcium. If you take too much or take them for longer than directed, you could get an overdose of calcium. Too much calcium can cause you to feel sick or vomit.