QUICK RESPONSE WILL BE HIGHLY APPRECIATED AS I HAVE TO PREPARE FOR THE MIDTERM.

THIS QUESTION IS FROM THE COURSE MSE 342- MATERIALS PROCESSING 1 OF Materials Science and Engineering.

DO THE QUESTION AT 900K INSTEAD OF 1000K

Q. Hematite(Fe203) is to be reduced to wustite (which we can take as FeO for the purposes of this problem), without the formation of metallic iron. The reducing agent is to be a mixture ofhydrogen and water vapor. What are the upper and lower limits on the % water vapor in the reducing gas if reduction is to be carried out at 1000 K. [Hint: the reduction will proceed first by the formation of magnetite (Fe30 4).] Standard free energies of formation at 1000 K (kJ/mol):

H20 = -192

FeO = -199

Fe2O 3=-560

Fe3O 4 = - 7 9 0

Consider the process at the temperature 900K instead of 1000K. Is this process feasible at this temperature?