Final answer:
In a double-replacement reaction, the slightly soluble solid compound that is formed and falls out of solution is known as a precipitate.
Step-by-step explanation:
The slightly soluble solid compound produced in a double-replacement reaction is known as a precipitate. This type of reaction, sometimes also referred to as double-displacement or metathesis, involves two ionic compounds in aqueous solution that exchange anions, forming new compounds. For these reactions to proceed, one of the products formed must be insoluble in water. This insoluble product is the precipitate, which falls out of solution as a solid. The formation of a precipitate is a key indicator that a double-replacement reaction has occurred, making it an important concept in understanding chemical reactivity and solubility.
In a double-replacement reaction, the slightly soluble solid compound that is produced is called a precipitate.
Example:
AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (aq)
In this reaction, AgCl is the precipitate, which is a slightly soluble solid compound.