Heartburn is a form of indigestion felt as a burning sensation in the chest when stomach acid comes back up into the esophagus. Some people take an antacid to relieve heartburn.
Answer
A
The antacid is basic and will neutralize the base entering the esophagus.
B
The antacid is basic and will neutralize the acid entering the esophagus.
C
The antacid is acidic and will raise the pH of the esophagus.
D
The antacid is acidic and will lower the pH of the esophagus.