Ammonium chloride is a white solid that breaks down when heated and produces ammonia and hydrogen chloride.
A reversible reaction is a reaction in which the conversion of reactants to products and products to reactants occur at the same time. In the above example, the chemical shows a reversible reaction because it moves both forward and backward direction. In reversible reaction, equal amount of reactant is converted into product and product into reactant.
So we can conclude that Ammonium chloride is a chemical that represents a reversible reaction.
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