2 100 kmol/h of a stream containing 20 mol% CO, 20 mol% H2O, and 60 mol% H2 is combined with additional steam and fed to a water-gas shift reactor to produce more hydrogen according to the reaction: CO + H2O + CO2 + H2 The equilibrium constant of the water-gas shift reaction is 200, and the mole fraction of hydrogen at the outlet is 0.75. Write and balance the chemical equation. How much additional steam is fed to the water-gas shift reactor? (For your verification - Answer: 5.1 kmol/h)