Hydrochloric acid has many uses. It is used in the production of chlorides, fertilizers, and dyes, in electroplating, and in the photographic, textile, and rubber industries. Hydrochloric acid is corrosive to the eyes, skin, and mucous membranes.

Application

N is the unit to represent the concentration of any substance in Normality. 1N of a substance = Number of equivalent weights /Volume of it in Litres. So, 1N HCl would mean 1gm equivalent of HCl dissolved in 1L solution. 0.1 N of HCl would obviously mean 0.1 gm equivalent of HCl dissolved in 1L of solution.