In a double-replacement reaction, the a) products are a new element and a new compound b) products are a new element and a new compound c) reactants are two ionic compounds d) reactants are two elements

Option (c) is the correct answer.

Explanation:

A reaction in which there is exchange of two ions of two different compounds then this type of reaction is known as double-replacement reaction.

For example,

Therefore, this results in the formation of two new ionic compounds whose properties are different from their reactants.

Thus, we can conclude that in a double-replacement reaction, the reactants are two ionic compounds.