# 11.5     Is boric acid a protic acid ? Explain.

Boric acid is not a protic acid. It is a weak monobasic acid, behaves as a Lewis acid by accepting a pair of an electron from the water molecules($OH^-$)
$B(OH)_{3}+H_{2}O\rightarrow [B(OH)_4]^-+H_{3}O^+$