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Chemical Reactions and Equations — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceChemical Reactions and Equations3 Marks
Question
What do you mean by a precipitation reaction? Explain by giving examples.
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Answer

A precipitation reaction is a reaction in which soluble ions in separate solutions are mixed together to form an insoluble compound that settles out of solution as a solid. This insoluble compound is called a precipitate.
An example of a precipitation reaction.
Aqueous silver nitrate $\left( AgNO _3\right)$ when added to a solution containing potassium chloride ( KCl $)$ precipitates a white solid, and silver chloride is observed.
$AgNO_{3(aq)}+KCl_{(aq)}-AgCl_{(s)}+KNO_{3(aq)}$
The silver chloride $( AgCl )$ has formed a solid, which is observed as a precipitate.

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