Pure water under the atmospheric pressure of 100,000 Pa is converted to steam at a temperature of 100 0C. What statement can you make regarding the relation between Gibbs free energy (or chemical potential) of water and steam at 100 0C, under atmospheric pressure. If the heat needed to vaporise 1 kg of water to steam at 100 0C is 2265 kJ/kg. Work out the difference between entropy of steam and water at the boiling temperature. b) If a small amount of salt 0.0002 mol is added to every 18 g of water, calculate the chemical potential change of water in the salt solution. c) Assuming that the chemical potential of water in the solution does not change much with pressure, work out the pressure at which the water in the salt solution will boil, at 100 0 You may take steam as being an ideal gas.

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Pure water under the atmospheric pressure of 100,000 Pa is converted to steam at a temperature of 100 ⁰C.

What statement can you make regarding the relation between Gibbs free energy (or chemical potential) of water and steam at 100 ⁰C, under atmospheric pressure.

If the heat needed to vaporise 1 kg of water to steam at 100 ⁰C is 2265 kJ/kg. Work out the difference between entropy of steam and water at the boiling temperature.

b) If a small amount of salt 0.0002 mol is added to every 18 g of water, calculate the chemical potential change of water in the salt solution.

c) Assuming that the chemical potential of water in the solution does not change much with pressure, work out the pressure at which the water in the salt solution will boil, at 100 ⁰ You may take steam as being an ideal gas.

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