# How would you classify the reaction 2PbO + O_2 -> 2PbO_2?

Apr 11, 2017

You could call it either oxidation or a synthesis (aka "combination") reaction, as it fits both categories.

#### Explanation:

Any time a chemical reacts with oxygen, the process is correctly called oxidation.

However, I suspect you are trying to fit this into one of the categories - synthesis, decomposition, single replacement or double replacement.

This one is synthesis, as it follows the general form of

$A + B \rightarrow C$

In other words, two reactants form one product. This is synthesis.