PLEASE ANSWER ALL PARTS!!! 7.66 (a) Consider a two-phase system, where one phase is pureliquid A and the second phase is an ideal gas mixture of A vaporwith inert gas B (assumed insoluble in liquid A). The presence ofgas B changes μA, the chemical potential of liquid A, because Bincreases the total pressure on the liquid phase. However, sincethe vapor is assumed ideal, the presence of B does not affect μg,the chemical potential of A in the vapor phase [see Eq. (6.4)].Because of its effect on μ¼, gas B affects the liquid-vapor equi-librium position, and its presence changes the equilibrium vaporpressure of A. Imagine an isothermal infinitesimal change dP inthe total pressure P of the system. Show that this causes a changedPA in the vapor pressure of A given byАdPAV¹m.AVm.APAconst. T(7.38)dPV8m,ARTEquation (7.38) is often called the Gibbs equation. Because Vm,A'm,Ais much less than Vg the presence of gas B at low or moder-ate pressures has only a small effect on the vapor pressure of A.(b) The vapor pressure of water at 25°C is 23.76 torr. Calculatethe vapor pressure of water at 25°C in the presence of 1 atm ofinert ideal gas insoluble in water.

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Answered: 7.66 (a) Consider a two-phase system,…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 46P

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The sealed containers of fizzy drinks contain dissolved CO2. This dissolved CO2 is in equilibrium with a small quantity of gaseous CO2 at the top of the container. (a) The partial pressure of CO2 gas in a 250 cm3 can of fizzy drink is 3.0 atm at 25 0C. What is the concentration of CO2 in the fizzy drink? (b) If the can contain only the mass of CO2 1.09g as a gas, calculate the pressure in the can when it is stored at 25 0C. (c) The maximum pressure that a can of fizzy drink can withstand is 7 atm. Using the graph below, determine the maximum temperature at which a can, can be stored safely. (concentration=0.093M
The sealed containers of fizzy drinks contain dissolved CO2. This dissolved CO2 is in equilibrium with a small quantity of gaseous CO2 at the top of the container. (a) The partial pressure of CO2 gas in a 250 cm3 can of fizzy drink is 3.0 atm at 25 0C. What is the concentration of CO2 in the fizzy drink? (b) If the can contain only the mass of CO2 calculated in part (ii) as a gas, calculate the pressure in the can when it is stored at 25 0C. (c) The maximum pressure that a can of fizzy drink can withstand is 7 atm. Using the graph below, determine the maximum temperature at which a can, can be stored safely. (concentration=0.093M)
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Henry’s law constant for CO2 in the water at 25 °C is 3.1 * 10-2 M atm-1. (a) What is the solubility of CO2 in the water at this temperature if the solution is in contact with air at normal atmospheric pressure?
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Question 5 5.1 The normal boiling temperature of benzene is 353.24 K and the vapour pressure of liquid benzene is 1.19x104 Pa at 20 °C. (a) Calculate AyapH (kJ.mol) for benzene. (b) What is the AvapS for benzene in kJ.mol-!? 5.2 Water boils at 100 °C at 1 atm and its enthalpy of vaporization is 40.7 kJ.mol. In some chemistry experiment, it is desired that the water boils at temperature of 89 °C. Calculate what external pressure should be (in atm) in this case.
At 20 °C, the vapor pressure of benzene 1C6H62 is 75 torr, and that of toluene 1C7H82 is 22 torr. Assume that benzene and toluene form an ideal solution. (a) What is the composition in mole fraction of a solution that has a vapor pressure of 35 torr at 20 °C? (b) What is the mole fraction of benzene in the vapor above the solution described in part (a)?
(i) Gas (A) is more soluble in water than Gas(B) at the same temperature. Which one of the two gases will have the higher value of KH(Henry’s constant) and why?(ii) In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?

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