Consider the following reaction: CH4(g) + H,0(g) 1270 K > CCXg) + m^g) In the reaction given above, the mixture of CO and H2 is:

The reaction CH4(g) + H2O(g) at 1270 K produces a mixture of carbon monoxide (CO) and hydrogen (H2). This process is known as steam methane reforming (SMR) [3]. While the term 'synthesis gas' or 'syngas' is the modern technical name for this mixture [1], it is historically and commonly referred to as 'water gas' in the context of industrial fuel gases [1]. Water gas is traditionally defined as a mixture of CO and H2, often produced by passing steam over red-hot carbon (coke) [1]. In contrast, producer gas is a mixture of CO and nitrogen (N2), formed by passing air over hot coke. Natural gas is primarily methane (CH4) itself. Therefore, the resulting mixture of CO and H2 in the given reaction is identified as water gas.

Sources

1. [3] https://en.wikipedia.org/wiki/Water_gas
2. [1] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 22: Renewable Energy > Types Of Hydrogen Based On Extraction Methods > p. 298