Question

How can you tell if a precipitate forms when you mix two solutions?

Answer 1

A precipitation reaction is the type of reaction in which when two soluble salts containing solutions are combined together as a result we got an insoluble salt called precipitate and the process called precipitation.

Complete step by step answer:
Thus, precipitation refers to a chemical reaction which occurs in aqueous solution when two ions bond together to form an insoluble salt.
Explanation:- The precipitation reactions can be useful in the laboratory to determine the presence of various ions in solution.
Here, we are taking an example of reaction of silver nitrate react with calcium chloride the precipitation of silver chloride of white colour forms.
Reaction as follows.
$AgN{{o}_{3\left( aq \right)}}+CaC{{l}_{2\left( aq \right)}}\to AgC{{l}_{\left( s \right)}}+CaN{{o}_{3\left( aq \right)}}$
Above we have the precipitation reaction in that precipitation of silver chloride will form.
The reaction can also be written in terms of individual dissociated ions in the combined solution.
$A{{g}^{+}}_{\left( aq \right)}+No_{3\left( aq \right)}^{-}+Ca_{\left( aq \right)}^{+}+Cl_{\left( aq \right)}^{-}$
$Agc{{l}_{\left( s \right)}}+Ca_{\left( aq \right)}^{+}+N{{o}_{3\left( aq \right)}}$

Note: Generally precipitation reaction takes place when ions present in the aqueous solutions with the help of precipitation reaction we detect which element is present in the given solution.