Advertisements
Advertisements
Question
Boric acid is an acid because its molecule ______.
Options
contains replaceable H+ ion.
gives up a proton.
accepts OH– from water releasing proton.
combines with proton from water molecule.
Advertisements
Solution
Boric acid is an acid because its molecule accepts OH– from water releasing proton.
Explanation:
Because of the small size of boron atom and presence of only six electrons in its valence shell, B(OH)3 accepts a pair of electrons from OH– ion of H2O, releasing a proton.
APPEARS IN
RELATED QUESTIONS
Is boric acid a protic acid? Explain.
Explain the Structure of Boric Acid.
Explain the following reaction.
Hydrated alumina is treated with aqueous NaOH solution.
Write a balanced equation for NaH + B2H6 → ?
An aqueous solution of borax is _______.
Draw the structures of BCl3.NH3 and AlCl3 (dimer).
Explain the nature of boric acid as a Lewis acid in water.
Draw the structure of boric acid showing hydrogen bonding. Which species is present in water? What is the hybridisation of boron in this species?
When aqueous solution of borax is acidified with hydrochloric acid, a white crystalline solid is formed which is soapy to touch. Is this solid acidic or basic in nature? Explain.
What are boranes? Give chemical equation for the preparation of diborane.
A compound (A) of boron reacts with NMe3 to give an adduct (B) which on hydrolysis gives a compound (C) and hydrogen gas. Compound (C) is an acid. Identify the compounds A, B and C. Give the reactions involved.
Aqueous solution of which of the following boron compounds will be strongly basic in nature?
Diborane (B2H6) reacts independently with O2 and H2O to produce, respectively:
In diborane ______.
On the addition of mineral acid to an aqueous solution of borax, the compound formed is ______.
Which one of the following methods is used to prepare borax crystals?
Boric acid (H3BO3) is ______.
