Under atmospheric pressure iron melts at 1530 ?C, and the latent heat of fusion is 1.49 × 104 J/mole. At the melting point, the density of the solid phase is 7.80 g/cm3 and that of the liquid phase is 7.06 g/cm3. The atomic mass for iron is 55.8.
(a) What are the molar volumes (in m3) for iron in the solid and liquid phases at the melting point?
(b) What is the change in molar volume of the iron when the solid is melted?
(c) To force iron to melt at a higher temperature, would the pressure on it have to increase or decrease?
(d) At what pressure would the melting point be 1600 ?C?