What is the Bronsted-Lowry definition of a base? (Answer's B)
- compound that donates protons
- compound that accepts protons (right answer)
- substance that increases hydroxide ion concentration
- substance that increases hydronium ion concentration

compound that accepts protons

Explanation:

According to Bronsted-Lowry theory, a base is a molecule or ion which accepts the proton while an acid is a substance that donates a proton and produces a conjugate base.

An example of Bronsted-Lowry base is hydroxide ion, OH- as shown in the reaction below

CH3COOH(aq) + OH-(aq) <---> CH3COO-(aq) + H2O(l)

The Ethanoic acid acts as an acid by donating a proton to the hydroxide ion which accepts it and forming water, H2O in the end.

Thus, according to bronsted-Lowry, a base is a compound that accepts protons (H+)