Question

Why acids behaves as acidic in presence of water​

Answer 1

The acidic behaviour of acid is due to presence of hydrogen ions, H+(aq) ions. The acid produce hydrogen ion only on dissolving in water. In absence of water ,acid do not produce hydrogen ions and hencedo not show acidic behaviour.

Answer 2

The acids behave acidic in wated due to presence of H+ ions

In water their H3O+ ions concentration increases and thus acids shows acidic behaviour