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Hydrogen chloride is a colorless irritating gas. It can dissolve in water to make hydrochloric acid. It was first prepared by Glauber. He called it 'spirit of salt'.It reacts with ammonia to make a white smoke of ammonium chloride. It is used in the making of plastics. It can form mists in air if it absorbs water. It can be made by reacting sodium chloride with sulfuric acid. It can be made by reacting hydrogen and chlorine, but the reaction is violent unless the reaction takes place in presence of diffused sunlight.It is commomly known as muriatic acid.It is heavier than air. It is a polar covalent compound and exists as molecule. It is non combustible and non supportor of cumbustion. It is highly soluble in water.