Question

Which substance is an acid ?

Answer 1

Answer:

According to Arrhenius definition, an acid is a substance that releases hydrogen ion or hydronium ion.

there are also other definition like bronsted and lewis.

I HOPE IT WILL HELP

Answer 2

Answer:

if you like my answer markme barinlest:)

Explanation:

An acid is a substance or compound that releases hydrogen ions (H+) when in solution. In a strong acid, such as hydrochloric acid (HCl), all hydrogen ions (H+), and chloride ions (Cl-) dissociate (separate) when placed in water and these ions are no longer held together by ionic bonding.