Which describes a precipitate in a chemical reaction?
a. a gaseous reactant that forms aqueous products
b. a solid reactant that forms aqueous products
c. a gaseous product formed from aqueous reactants
d. a solid product formed from aqueous reactants

Answer : The correct option is, (D) a solid product formed from aqueous reactants.

Explanation :

Precipitation reaction : It is a type of chemical reaction in which the solid substance is formed from liquid reactant.

For example : When the sodium chloride react with the silver nitrate to gives silver chloride as a solid precipitate and sodium nitrate solution.

The balanced precipitation reaction will be,

Hence, the correct option is, (D) a solid product formed from aqueous reactants.

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i think   the answer is c hope i'm right