Double Replacement Reaction in Chemistry

What type of reaction is represented by the generic equation AB + CD → AD + CB?

combustion

decomposition

single replacement

double replacement

Answer : Option D) Double replacement

Explanation : Double displacement or replacement reactions are those in which the two reactant molecules exchange the cations and anions between them and give a new product.

Double replacement reactions, also known as double displacement reactions, involve the exchange of ions between two compounds to form new compounds. This type of chemical reaction is characterized by the switching of cations and anions.

For example, in the reaction AB + CD → AD + CB, the cation of compound AB switches places with the cation of compound CD, resulting in the formation of new compounds AD and CB. This process is commonly observed in aqueous solutions.

Double replacement reactions are often used in the laboratory to create insoluble products, drive the formation of a gas, or generate water molecules. They are crucial in understanding chemical reactions and their products.

Overall, double replacement reactions play a significant role in chemistry and are essential for studying the interactions between different compounds.