Dihydrogen gas used in Haber's process is produced by reacting methane from natural gas with high temperature steam. The first stage of two stage reaction involves the formation of `CO` and `H_(2)`. In second stage , `CO` formed in first stage is reacted with more steam in water gas shift reaction.
`CO(g)+H_(2)OhArrCO_(2)(g)+H_(2)(g)`
If a reaction vessel at `400^(@)C` is charged with an equimolar mixtureof `CO` and steam such that `p_(CO)=p_(H_(2)P=4.0` bar, what will be the partial pressure of `H_(2)` at equilibrium ? `K_(p)=10.1` at `400^(@)C`