The correct statement about orthoboric acid is

Question

The correct statement about orthoboric acid is (A) It is a strong monobasic acid (B) It is not a proton donor, but a weak Lewis acid (C) It is a tribasic acid (D) It is harmful for eyes

Tardigrade Admin · Accepted Answer

Orthoboric acid is a weak mono basic acid with K a =1.0 × 10-9. It does not act as protonic acid (i.e. proton donor) but behaves as Lewis acid by accepting a pair of electrons from OH -ion. B ( OH )3+2 H - O - H arrow [ B OH 4]-+ H 3 O +

Q. The correct statement about orthoboric acid is

It is a strong monobasic acid

It is not a proton donor, but a weak Lewis acid

It is a tribasic acid

It is harmful for eyes

Orthoboric acid is a weak mono basic acid with $K_{a} = 1.0 \times 1 0^{- 9}$ . It does not act as protonic acid (i.e. proton donor) but behaves as Lewis acid by accepting a pair of electrons from $O H^{-}$ ion. $B (O H)_{3} + 2 H - O - H \to [BO H_{4}]^{-} + H_{3} O^{+}$

Q. The correct statement about orthoboric acid is

It is a strong monobasic acid

It is not a proton donor, but a weak Lewis acid

It is a tribasic acid

It is harmful for eyes

Orthoboric acid is a weak mono basic acid with Ka​=1.0×10−9. It does not act as protonic acid (i.e. proton donor) but behaves as Lewis acid by accepting a pair of electrons from OH−ion. B(OH)3​+2H−O−H→[BOH4​]−+H3​O+

Orthoboric acid is a weak mono basic acid with $K_{a} = 1.0 \times 1 0^{- 9}$ . It does not act as protonic acid (i.e. proton donor) but behaves as Lewis acid by accepting a pair of electrons from $O H^{-}$ ion. $B (O H)_{3} + 2 H - O - H \to [BO H_{4}]^{-} + H_{3} O^{+}$