Ammonium chloride is a white solid that breaks down when heated and produces ammonia and hydrogen chloride.
<h3>What is the reversible reaction?</h3>
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.
Learn more about reaction here: brainly.com/question/11231920
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Answer:
diamond is denser because it is more tightly packed than coal
Molarity is the most convenient way to express concentration.
Mathematically, molarity is expressed as

In present case,
mass of solute (KCl) = 36 g
molecular weight of KCl = 74.55 g/mol
volume of solution = 100 ml = 0.1 l
∴ Molarity =

= 4.829 M
Thus, conc. of saturated KCl at 20 oC is 4.829 M