2 CHEMICAL POTENTIAL [6] Calculate the difference in slope of the chemical potential against temperature on either side of (a) The freezing point of water (b) The boiling point of water Data: Afus H=6.01 x 103 J mol-1 AvapH =40.6 x 103 J mol-1 Which state function does the slope represent? Why is the slope steeper for evaporation?

2 CHEMICAL POTENTIAL [6] Calculate the difference in slope of the chemical potential against temperature on either side of (a) The freezing point of water (b) The boiling point of water Data: Afus H=6.01 x 103 J mol-1 AvapH =40.6 x 103 J mol-1 Which state function does the slope represent? Why is the slope steeper for evaporation?

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter7: Equilibria In Multiple-component Systems

Section: Chapter Questions

Problem 7.39E: Convert the units of Henrys law constant for CO2, in table 7.2, to units of, mmHg, atm, and bar. In...

See similar textbooks

Similar questions

ou place hot metal into a beaker of cold water. ol type='a'> Eventually what is true about the temperature of the metal compared to that of the water? Explain why this is true. i>Label this process as endothermic or exothermic if we consider the system to be the metal. Explain. the water. Explain.
Heat is released when some solutions form; heat is absorbed when other solutions form. Provide a molecular explanation for the difference between these two types of spontaneous processes.
Are changes in state physical or chemical changes? Explain. What type of forces must be overcome to melt or vaporize a substance (are these forces intramolecular or intermolecular)? Define the molar heat of fusion and molar heat of vaporization. Why is the molar heat of vaporization of water so much larger than its molar heat of fusion? Why does the boiling point of a liquid vary with altitude?
What mass (g) of ethanol, CH3CH2OH(), can be vaporized at its boiling point of 78.4 C by transfer of 500. kJ to the liquid? The vapH of ethanol is 38.6 kJ/mol at this temperature.
Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25C. The vapor above the solution is collected and condensed. Using the following data, determine the composition in mole fraction of the condensed vapor. Substance Gfo C6H6(l) 124.50 kJ/mol C6H6(g) 129.66 kJ/mol CCI4(l) 65.21 kJ/mol CCI4,(g) 60.59 kJ/mol
Dissolving 3.0 g of CaCl2(s) in 150.0 g of water in a calorimeter (Figure 5.12) at 22.4 °C causes the temperature to rise to 25.8 °C. What is the approximate amount of heat involved in the dissolution, assuming the specific heat of the resulting solution is 4.18 J/g °C? Is the reaction exothermic or endothermic?
Insulin is a hormone responsible for the regulation of glucose levels in the blood. An aqueous solution of insulin has an osmotic pressure of 2.5 mm Hg at 25C. It is prepared by dissolving 0.100 g of insulin in enough water to make 125 mL of solution. What is the molar mass of insulin?
Define the joule in terms of SI base units.
9.29 In which case is heat added to the system: (a) E=43J , w=40J ; or (b) E=31J , w=34J ?
3. (a) The Lattice enthalpy for the solid ionic compound AgBr is +900. kJ/mole. Write the chemical equation that corresponds to the Lattice Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large positive number. (b) The hydration enthalpy for AgBris -821 kJ/mole. Write the chemical equation that corresponds to the Hydration Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large negative number. (c) Would you expect this compound to be soluble in water? Why/Why not? Calculate anything you need in order to figure this out, and explain your answer.
The enthalpy of solution of an ionic compound can be calculated from its lattice enthalpy and the enthalpies of hydration of the individual ions. Use the information shown below to complete the requested calculations. Quantity Lattice energy of solid ammonium chloride Lattice energy of solid ammonium nitrate Enthalpy of hydration of the gaseous ammonium ion Enthalpy of hydration of the gaseous chloride ion Enthalpy of hydration of the gaseous nitrate ion Enthalpy Change (kJ/mol) a. The enthalpy of solution of solid ammonium chloride (in kJ/mol) b. The enthalpy of solution of solid ammonium nitrate (in kJ/mol) 705 646 -307 -381 -314
At 25°C, some water is added to a sample of gaseousmethane (CH4) at 1.00 atm pressure in a closed vessel, andthe vessel is shaken until as much methane as possible dissolves. Then 1.00 kg of the solution is removed and boiledto expel the methane, yielding a volume of 3.01 L ofCH4(g) at 0°C and 1.00 atm. Determine the Henry’s lawconstant for methane in water.