Question

which would be least likely to completely dissolve in water?
hydrochloric acid
sulfuric acid
nitric acid
acetic acid

Explanation:

Hydrochloric, sulfuric, and nitric acids are strong acids that completely dissociate in water. Acetic acid is a weak acid and only partially dissociates in water, so it is least likely to completely dissolve in the sense of full - dissociation.

Answer:

acetic acid