Acid donates a proton and produces a conjugate base.

Answer: Yes! The statement is true

Explanation:

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

An example of Bronsted-Lowry acid and base is Ethanoic acid, CH3COOH and hydroxide ion, OH - respectively 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, thus producing ethanoate ion, CH3COO - as a conjugate base.

Thus, the statement "Acid donates a proton and produces a conjugate base" is true.