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Question

When does precipitation occur?


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Solution

Precipitation:

  • Precipitation is a reaction in which an insoluble solid is formed in the aqueous solution due to the reaction of two or more reactants.
  • To make a precipitation reaction, the one substance should be made as a super saturated solution.
  • Also, this is a process, where the soluble substance is converted into an insoluble one.
  • The insoluble substance formed is called a precipitate.

Occurrence:

  • When a compound's concentration exceeds its solubility, it can precipitate.
  • This can happen as a result of temperature changes, solvent evaporation, or solvent mixing.
  • A solution that is significantly supersaturated precipitates more quickly.
  • When the cations of one reactant and the anions of the second reactant in aqueous solutions combine to form an insoluble ionic solid, this is known as a precipitation reaction.
  • A chemical reaction can result in the development of a precipitate.
  • Eg: Silver nitrate with sodium chloride gives silver chloride and sodium nitrate.
  • AgNO3(aq)+NaCl(aq)AgCl(s)+NaNO3(aq)(Silver(Sodium(Silver(Sodiumnitrate)chloride)chloride)nitrate)

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