Definition of common for Students. 1  1 : affecting, belonging to, needed by, or used by everybody for the common good a common room. 2  2 : shared by two or more individuals or by the members of a family or group a common ancestor. 3  3 : 1general 1 common knowledge. 4  4 : occurring, appearing, or used frequently a common sight a common name.
1 Apple cider vinegar is highly acidic. 2  The main ingredient is acetic acid, which is quite harsh. 3  You should always dilute it with water or juice before swallowing. 4  Pure, straight apple cider vinegar could damage your tooth enamel or the tissues of your mouth and throat. Apple cider vinegar is highly acidic. 2  The main ingredient is acetic acid, which is quite harsh. 3  You should always dilute it with water or juice before swallowing. 4  Pure, straight apple cider vinegar could damage your tooth enamel or the tissues of your mouth and throat.
Vinegar is acidic, it's key component is acetic acid. You get heartburn because you have too high a concentration of acid in your stomach and you get a little reflux that travels up your digestive system. The best way to combat this is with something like Tums, which has calcium carbonate in it.inegar is acidic, it contains ethanoic acid (aka acetic acid) I don't know why the article says As a highly basic substance, vinegar balances out the pH in your system by neutralizing the overly acidic environment of heartburn..