Acid reflex is happens when the stomach is more acidic than usual, or when a person has the sensation of stomach acid coming up through the esophagus. It is commonly referred to as GERD or gastroesophageal reflex disease.
Neutralizing it with a base commonly baking soda is an effective way to treat GERD. Baking soda or sodium hydrogen bicarbonate NaHCO a base reacts with hydrchloric acid HCl inside the stomach and neutralize each other.
3
NaHCO + HCl <=> NaCl + H CO
3 2 3
(s) (aq) (aq) (aq)
H2CO3 (aq) <=> H2O (l) + CO2 (g)