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8.17 Sketch the phase diagram corresponding to the free energy curves shown below. Note that in this case, CS > CL and To > T1 > T2. Hint: refer to Problem 8.11.

8.18 What is the partial pressure of water in equilibrium with an aqueous solution containing 30 mole percent alcohol? The temperature is 25oC and alcohol and water form a regular solution with an interaction energy of Q = - 20 kJ/mole

8.19 The following table gives the mole fractions of component A in a binary solution and in the equilibrium gas phase and their total vapor pressure

(p = pA + pB). Complete the next three columns of the table to include:

a) In the 4th column, enter the partial pressures of component A.

b) In the 5th column, tabulate the ratio pA/xAL. From these entries, deduce the Henry's law constant for component A

c) In the 6th column, calculate and enter the activity coefficient of A in the liquid.

Xal

XAg

p, kPa

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Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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