Hydrochloric acid (HCL) : Preparation, Properties and Uses

Published on 14-Oct-2022

Hydrochloric acid (HCL)

Once hydrogen chloride gets dissolved in water, HCl is created. It is an unsophisticated diatomic molecule. The hydrogen and chlorine atom are joined with a single covalent bond. The bond between these two is polar, as the chlorine atom is more electronegative when contrasted with the hydrogen atom.

It is highly acidic. It is a colorless and viscous acid. It is corrosive and has a uniquely bitter smell. It is usually used as a laboratory reagent, and in industry, it produces leather and gelatin. The physical assets such as density, melting point, PH, and boiling point rely on the concentration of HCl.

Hydrochloric Acid Preparation

In the research laboratory and commercial scale, hydrogen chloride is made by warming sodium chloride with concentrated H2SO4. The gas can be made dry by passing through a sulfuric acid concentration.

NaCl + H2SO4 → NaHSO4 + HCl 

NaHSO4 + NaCl → Na2SO4 + HCl

Hydrochloric Acid Properties

Hydrogen chloride is a very odorous and colorless gas. Gaseous hydrogen chloride replies to the chlorides formed by active metals and their oxides, hydroxides, and carbonates. These reactions only happen willingly in the presence of humidity. Hydrogen chloride is fully dry and is relatively unreactive.

Hydrochloric acid reactions are similar to those of common strong acids. For example, metal reactions in which hydrogen gas is relocated, reactions with sophisticated metal oxides and hydroxides that are neutralized with the formation of a metal chloride and water, and responses with weak acid salts where the heavy acid gets displaced.

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