deffinetion of precipitation reaction .
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Answer: A precipitation reaction refers to the formation of an insoluble salt when two solutions containing soluble salts are combined. The insoluble salt that falls out of solution is known as the precipitate, hence the reaction's name. Precipitation reactions can help determine the presence of various ions in solution.
Explanation: 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. ... In the above reaction, a white precipitate called silver chloride or AgCl is formed which is in the solid-state.
A precipitation reaction is a chemical reaction that occurs in aqueous solution and form precipitates. Further, chemical reactions consist of chemical changes that take place within the substances. Thus, it gives rise to a new element under some particular conditions.
It means the chemical reaction occurs in aqueous solutions where two ions bond together to form insoluble salts.
for e. g :-
2KOH(aqueous) + CaCl2(aqueous—-Ca(OH)2(aqueous) + 2KCl(aqueous)
AgNO3(aqueous) + NaCl(aqueous) —- AgCl↓ + NaNO3 (aqueous)
Mg(OH)2(s) + 2HCl (aqueous) ——— MgCl2(aqueous) + 2H2O(l)
Properties of Precipitation Reaction:-
● The reactants should be in aqueous solutions or medium in an ionic state.
● It takes place between ions of the reactants present in the aqueous solutions, which form the product.
● At the end of it, the products which form are the precipitates that are insoluble in aqueous solutions.
● They are known as ionic reactions because by the exchange of ions in the reaction, the product is formed.