According to Brønsted-Lowry, an acid is a substance that:
AAccepts a proton
BDonates a proton
CDonates an electron pair
DAccepts an electron pair
Answer & Solution
Correct answer: B. Donates a proton
1. Brønsted-Lowry: acid donates H⁺ (proton); base accepts H⁺.
2. (A) is the base definition; (C) is the Lewis base; (D) is the Lewis acid.
3. Example: in HCl + H₂O → Cl⁻ + H₃O⁺, HCl is the acid, H₂O is the base.
_Source: NCERT Class 11 Chem Ch 7 §7.10 Brønsted Acids and Bases_
Related questions
Acetic acid together with sodium acetate acts as a:Suppressing ionisation by adding an ion already present is the:A NaOH solution with a hydronium concentration of 10 to the minus 10 M has a pH of:A solution with a hydrogen ion concentration of 10 to the minus 7 M has a pH of:The pH of a solution is defined as the negative logarithm to base:The pH scale is:Thomas M. Lowry was a chemist from:A Bronsted-Lowry acid is a substance capable of donating: