Physical Chemistry> Is boric acid a protic acid ? explain.

Is boric acid a protic acid ? explain.

Shashank , 10 Years ago

Grade Upto college level

4 Answers

Sunil Kumar FP

Last Activity: 10 Years ago

a proti acid is one which can ionise in solution to produse proton or hydronium ion...it is not protic acis since it does not ionise in h2o to give a proton.
Boric acid is not a protic acid.It accepts a pair of electron from OH- ion of water and acts as a lewis acid
B(OH)3 +2H20 -----[B(OH)4]-+H3O+

Mansi Saumya Priya

Last Activity: 7 Years ago

When boric acid react with water..As boron contain one vacant orbital so it gain oH- ion from water and thus behave as a Lewis acid

mithun

Last Activity: 6 Years ago

The concept of protonic acid was given by both Arrhenius and Bronsted. According to their theories , a protonic acid is a species which donate a proton i.e. H+ . But boric acid do not donate H+ rather it accepts an electron pair from the solution or the donor i.e. an OH-.

Kushagra Madhukar

Last Activity: 4 Years ago

Dear student,

Please find the attached solution to your problem.

The property of a protic acid is that it produces proton or hydronium ion in its solution by releasing a proton from its own.

However, Boric acid is not a protic acid. Because, it accepts a pair of electron from OH- ion of water and acts as a lewis acid and does not produce hydronium ion or proton on its own.

B(OH)₃+ 2H₂O → [B(OH)₄]^-+ H₃O⁺

Hope it helps.

Thanks and regards,

Kushagra