Water gas is a mixture of:

Water gas is a mixture of carbon monoxide $(\mathrm{CO})$ and hydrogen \left(\mathrm{H}_2\right)$, typically produced through a process known as gasification. In this process, steam$\left(\mathrm{H}_2 \mathrm{O}\right.$) is passed over red-hot coke (a form of carbon), which results in the following endothermic reaction:$\mathrm{C}(\text{ coke })+\mathrm{H}_2 \mathrm{O} \text{ (steam) } \rightarrow \mathrm{CO}+\mathrm{H}_2 This reaction occurs at high temperatures and requires continuous heating to maintain the reaction. The resulting water gas, composed of CO and \mathrm{H}_2, can be used as a fuel or as an intermediate in the production of other chemicals. It is an important industrial process for generating a synthesis gas that can be used in various applications, including the synthesis of methanol and hydrocarbons via the Fischer-Tropsch process.