How is it that drinking vinegar causes a burning sensation, whereas sodas like Coca Cola don’t even though they are equally acidic?

Question

I sometimes drink diluted apple cider vinegar because it feels like it helps with nausea and indigestion. Even when I dilute it 5 parts water to 1 part vinegar it kind of burns going down. Coca Cola seems to help with nausea and indigestion just as much, has about the same acidity as straight vinegar (2.5 pH) but actually feels cooling when it goes down. Is there something else in vinegar that causes that burning sensation?

In: Chemistry

Answer 1

Acetic acid is stronger than carbonic acid.

Acetic acid is what is in vinegar. Vinegar is already diluted acetic acid.

Carbonic acid is a consequence of dissolving CO2 into water.