Are vinegar and battery acid polyprotic?

Question

Are vinegar and battery acid polyprotic?

Answer 1

Acetic acid, CH3COOH, in vnegar is monprotic. Sulfuric acid, H2SO4, of battery acid is diprotic and therefore polyprotic.

Answer 2

Vinegar is acetic acid in water.  Acetic acid has the formula CH3COOH, and can only release the proton from the carboxyl moiety, so it is monoprotic.

Sulfuric acid, H2SO4 is used in the standard lead-acid automotive battery.  Sulfuric acid can release a single proton to form hydronium ion and hydrogen sulfate ion (HSO4-, also called bisulfate ion), and then the bisulfate ion can release a second proton to form hydronium ion and sulfate ion (SO4--).  So sulfuric acid is considered polyprotic.