# Can double replacement reactions be redox reactions?

Jun 29, 2015

No, they cannot.

#### Explanation:

For it to be a redox reaction, elements have to change oxidation states and that does not happen in double replacement reactions.

E.g $A g N {O}_{3} + N a C l \to A g C l + N a N {O}_{3}$

Ag is +1 before and after the reaction;
Na is +1 before and after the reaction too;
Both NO3 and Cl are -1 before and after the reaction;

Therefore, it is not a redox reaction.