Question

Which of the following reactions is an example of a single replacement reaction?

Select one:
a. Mg + AgNO3 --> Ag + Mg(NO3)2
b. Fe + O2 --> Fe2O3
c. C6H12O6 + O2 --> CO2 + H2O
d. H2O --> H2 + O2

Answer 1

Mg + AgNO₃ → Ag + Mg(NO₃)₂

Explanation:

A single replacement reaction is one in which an element gets replaced by another in a compound.

In the reaction

Mg + AgC→ Ag + Mg(NO₃)₂

Ag in AgNO₃ is replaced by Mg to give Mg(NO₃)₂.Only one element is getting replaced and hence it is a single replacement reaction.