The FeO powder was put in the system which contains carbon and CO/CO2 mixture by such a way that there is no direct contact between carbon and FeO. Estimate the possibility of reduction of Fe at pressure 1 Bar. Estimate the pressure, which correspond to beginning of the reduction process at chosen temperature. For temperature choose any temperature in the range 900-1000 K.

2.1 The (0.001-0.01) % of Ce (Zr) was
add to the 0.1%C steel at temperature
T. Estimate the concentration of the
oxygen in the steel in equilibrium
(take any concentration of Ce or Zr).
Or
2.2 The (1-3) % of Ti was added to the
Fe which is in N2
atmosphere at temperature T and pressure p. Is the formation of TiN possible?