More reactive element displaces a less reactive element from its compound or solution.
Double displacement reaction or Precipitation reaction
An exchange of ions between the reactants takes place to give new products.
For example,
An insoluble compound called precipitate forms when two solutions containing soluble salts are combined.
One of the best examples of precipitation reactions is the chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride is precipitated out. This is the insoluble salt formed as a product of the precipitation reaction. The chemical equation for this precipitation reaction is provided below.
AgNO3(aqueous) + KCl(aqueous) —–AgCl(precipitate) + KNO3(aqueous)
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