The explosive reaction between oxygen gas and carbon monoxide is actually a combustion reaction, and the equation is:

2CO(g) + O2(g) → 2CO2(g) + heat

Here's what's happening:

* CO(g): Carbon monoxide gas, a flammable gas.

* O2(g): Oxygen gas, a key component for combustion.

* CO2(g): Carbon dioxide gas, a product of the combustion.

* heat: Energy released during the reaction, making it explosive.

Important notes:

* This reaction is highly exothermic, meaning it releases a lot of heat.

* The reaction is spontaneous and can be very rapid, leading to an explosion if the mixture is ignited.

* This reaction is the basis for many industrial processes and is also responsible for the dangers of carbon monoxide poisoning.

Let me know if you have any other questions!