Question

Which of the following substances is never a Brønsted-Lowry acid in an aqueous solution?

a-sodium dihydrogen phosphate, NaH₂PO₄(s)
b-sodium acetate, NaCH₃CO₂(s)
c-ammonium nitrate, NH₄NO₃(s)
d-hydrogen bromide, HCl(g)
e-sodium bicarbonate, NaHCO₃(s)
-magnesium oxide, MgO(s)

Answer 1

Sodium acetate, NaCH₃CO₂(s), is never a Brønsted-Lowry acid in an aqueous solution.

Step-by-step explanation:

A Brønsted-Lowry acid is a substance that donates a proton (H+) in an aqueous solution. Out of the given options, the only compound that does not donate a proton in an aqueous solution is sodium acetate, NaCH₃CO₂(s). When it dissolves in water, it dissociates into sodium ions (Na+) and acetate ions (CH₃COO-), but it does not donate any protons. Therefore, (b) sodium acetate is never a Brønsted-Lowry acid in an aqueous solution.