Question

What is the composition of the mixture of steam and oxygen on being passed over coke at 1273k keeping temperature constant?

Answer 1

The composition of the mixture when steam and coke are passed over coke at 1273K will be as follows:

The mixture will have less steam as well as less oxygen. This is because coke (carbon) reacts with steam at elevated temperatures to form carbon (IV) oxide and hydrogen gas.

In the same case, coke also reacts with oxygen to form carbon (IV) oxide.

In general, the coke itself will also reduce in amount and the net effect will be more carbon (IV) oxide.