What is the correct formula for a simple replacement reaction?

In a simple replacement reaction, one element replaces another in a compound, resulting in the formation of a new compound and the release of the displaced element. The correct representation for this type of reaction is formulated as the combination of a compound and a free element reacting to form a new compound and a different free element.

The formula AB + C = AC + B illustrates this concept perfectly, where AB is a compound composed of elements A and B, and C is an element that displaces element B. Consequently, this results in a new compound AC and the release of element B. Understanding this reaction type is crucial, as it reflects the basic principles of chemical interactions and reactivity among different elements and compounds.