Estimate the minimum temperature at which magnetite can be reduced to iron by graphite.
Fe3O4(s) + 2C(s) 2CO2(g) + 3Fe(s)
Sr = +351.44 kJ.mol-1
The standard molar enthalpies of formation of magnetite and CO2(g)
Are -1118.4 and -393.51 kJ.mol-1 ,Respectively.
A) 670 C
B) Magnetite cannot be reduced by carbon at any temperature.
C) 787 C
D) 943 C
E) 1790 C
Correct Answer:
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