Question

what is a brine solution​

Answer 1

Brine, salt water, particularly a highly concentrated water solution of common salt (sodium chloride). Natural brines occur underground, in salt lakes, or as seawater and are commercially important sources of common salt and other salts, such as chlorides and sulfates of magnesium and potassium.

Answer 2

Sodium chloride diluted in water

NaOH + H20