what do you mean by a precipitation reaction explain by giving examples

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Detailed Solution

A precipitation reaction is a type of chemical reaction in which two soluble substances in aqueous solution react to form an insoluble solid called a precipitate. This solid separates from the solution and can be seen as a solid deposit.

Explanation:

It occurs when the product of the reaction is insoluble in water.
The insoluble product settles down at the bottom or floats as tiny particles suspended in the solution.
Precipitation reactions are commonly used to identify the presence of certain ions in a solution.

Example:

When solutions of silver nitrate (AgNO₃) and sodium chloride (NaCl) are mixed, they react to form silver chloride (AgCl), which is an insoluble white solid precipitate, along with soluble sodium nitrate (NaNO₃):

AgNO₃ (aq) + NaCl (aq) → AgCl (s) ↓ + NaNO₃ (aq)

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