Question

Give a balanced equation for the following conversion: [In one or two steps]

Coke to water gas.

Answer 1

Srep I:

Steam is passed over white hot coke at 1000°C

$$\underset{\text{[Coke]}}{\mathrm{C}}+\underset{\text{Steam}}{\mathrm{H}{\phantom{A}}_2\mathrm{O}}\stackrel{1000°\mathrm{C}}{\to }\underset{\text{Water gas}}{[\mathrm{CO}+\mathrm{H}{\phantom{A}}_2]}-\mathrm{△}$$

Water gas is obtained.

Step II:

Reduction of steam to hydrogen - by CO

$$\underset{\text{Water Gas}}{[\mathrm{CO}+\mathrm{H}{\phantom{A}}_2]}+\underset{\text{[Excess Steam]}}{\mathrm{H}{\phantom{A}}_2\mathrm{O}}\underset{\mathrm{Fe}{\phantom{A}}_2\mathrm{O}{\phantom{A}}_3}{\overset{450°\mathrm{C}}{\to }}\mathrm{CO}{\phantom{A}}_2+2\mathrm{H}{\phantom{A}}_2+\mathrm{△}$$