Question

Which among the following statement is false?

• A. Every protonic acid has its conjugate acid.
• B. Pair of Bronsted acid and base that differ by a proton is conjugate acid-base pair.
• C. A substance that accepts an electron pair to form coordinate covalent bond is an acid.
• D. Arrhenius theory is confined to aqueous solutions.

Answer 1

The correct option is A Every protonic acid has its conjugate acid.

In other words, a conjugate acid is the acid member, HX, of a pair of compounds that differ from each other by gain or loss of a proton. A conjugate acid can release or donate a proton. A conjugate base is the name given to the species that remains after the acid has donated its proton

Arrhenius theory is confined in aqueous solution

The concept of conjugate acid-base pair is related to Bronsted-Lowry acid-base theory and according to this theory, acid is a proton (H+) donor while base is a proton acceptor.

so only A option is given wrong statement