A) Use the Clapeyron equation to estimate (in bar/K) the slope of the solid-liquid phase boundary...

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Chemistry

A) Use the Clapeyron equation to estimate (in bar/K) the slopeof the solid-liquid phase boundary of water given the enthalpy offusion is 6.008 kJ/mol and the densities of ice and water atT=0^oC are 0.91671 and 0.99984 gm/cm³respectively.
B) In the preceding problem, what is the pressure required tolower the melting point of ice by 1C, in bars?
C) The standard molar entropy of rhombic sulfur is 31.80 J/K moland that of monoclinic sulfur is 32.6 J/K mol. At what temperaturewill the transition occur at 1 bar? Assume the enthalpy and entropydo not depend on the temperature within the temperature range ofinterest. Give answer in Kelvins. Note you will need data on theenthalpy of the transition. To get that, you will have to use thetable data that the standard Gibbs formation energy and density ofrhombic and monoclinic sulfur, at T=25C, are equal to 0 kJ/mol,2.070 g/cm3 and +0.33 kJ/mol, 1.957 g/cm3 respectively.

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3.7 Ratings (534 Votes)

A The equation to use will be the following For the solidliquid phase boundary dPdT StransVtrans HfTf Vf To get Vf Vms MMds 18 gmol 091671 gcm3 1964 cm3mol or 1964x106 m3mol See Answer

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