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Cementite, Fe3C, is metastable with respect to carbon-saturated α-iron and graphite at 950 K and 1 atm pressure. Given that the molar volumes of α-Fe, graphite, and Fe3C at 950 K are, respectively, 7.32, 5.4, and 23.92 cm3/mole, calculate the pressure, at 950 K, at which Fe3C is in equilibrium with carbon- saturated α-Fe and graphite. At what temperature, at 1 atm pressure, is carbon-saturated γ-Fe and graphite in equilibrium with cementite?

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Category:- Chemistry
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