Crystals of Epsom salt having an equivalent diameter of 1.5 cm are growing in a solution of MgSO4 at a supersaturation of 0.005 mole fraction MgSO4.7H2O and a temperature of 303 K. For saturated solution of MgSO4, the average coefficient of interfacial reaction is 0.18 gmol/cm2.h.mole fraction. The mass transfer coefficient has been estimated to be 1.75 gmol/cm2.h.mole fraction. The average density of the crystals is 1.68 g/cm3. Assuming the crystals to be cubic, calculate their growth rate in cm/h.
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