4B.9(a) When benzene freezes at 5.5°C its density changes from 0.879 g cm-3 to 0.891 gcm-3. Its enthalpy of fusion is 10.59 kJ mol-, Estimate the freezing point of benzene at 1000 atm.

Please answer sub-part d. Thank you so much.

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5.20. Multistage stripper. A stripper at 50 psia with three equilibrium stages strips 1,000 kmol/h of liquid at 300°F with the following molar composition: 0.03% Cı, 0.22% C2, 1.82% C3, 4.47% nC4, 8.59% nC, 34.87% nCio. The stripping agent is 1,000 kmol/h of superheated steam at 300 F and 50 psia, Use the Kremser equation to estimate the com positions and flow rates of the stripped liquid and exiting rich gas Assume a K-value for Cio of 0.20 and that no steam is absorbed. Calculate the dew-point temperature of the exiting gas at 50 psia. If it is above 300°F, what can be done?

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The standard Gibbs free energy of formation of NH3 is -16.5 kJ mol-¹ at 298 K. What is the reaction Gibbs free energy when the partial pressures of the N2, H2, and NH3 (treated as perfect gases) are 3.0 bar, 1.0 bar. and 4.0 bar, respectively? What is the spontaneous direction of the reaction in this case?

The normal boiling temperature of benzene is 353.24 K, and the vapor pressure of liquid benzene is 1.19 X 104 Pa at 20.0°C. The enthalpy of fusion is 9.95 kJ mol-¹, and the vapor pressure of solid benzene is 137 Pa at -44.3°C. Calculate the following: a. AH vaporization b. AS vaporization c. Triple point temperature and pressure