Question

pt: What type of reaction has occurred in the following equation?
2 Na,PO, + 3 CaCl, 6 NaCl + Caz(PO.)2

Answer 1

Answer:

Double replacement or double decomposition

Explanation:

In the reaction below, a double replacement or double decomposition has occurred.

     

          2Na₃PO₄   +   3CaCl₂   →  6NaCl  +  Ca₃(PO₄)₂

This reaction occurs mainly between two ionic substances.

The reaction involves an actual exchange of partners to form new compounds. For example;

             AB  + CD →  AD + CB

One of the following conditions below serves as the driving force for double replacement reactions:

• Formation of an insoluble compound or precipitate.
• Formation of water or any other non-ionizing compound
• Liberation of a gaseous product.