Physical Chemistry
2nd Edition
ISBN: 9781133958437
Author: Ball, David W. (david Warren), BAER, Tomas
Publisher: Wadsworth Cengage Learning,
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Chapter 4, Problem 4.61E
Interpretation Introduction
Interpretation:
The form of the Gibbs-Helmholtz equation for Helmholtz energy instead of Gibbs free energy is to be stated. The condition that must be held constant is to be stated.
Concept introduction:
Helmholtz energy of a system represents the useful work from a closed
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What are the values of q, w, AU, AH, AS, ASsurr, and ASuniv for the following a constant pressure process for a
system containing 0.356 moles of CH3OH ?
CH3OH(I, 22.0 °C, 1.00 atm) → CH3OH(g, 125.0 °C, 1.00 atm)
Assume that the volume of CH3OH(I) is much less than that of CH3OH(g) and that CH3OH(g) behaves as an ideal
gas. Also, assume that the temperature of the surroundings is 125.0 °C.
Data:
Molar heat capacity for CH3OH(I), Cp,m = 81.1 J K¯¹ mol-¹
Molar heat capacity for CH3OH(g), Cp,m = 44.1 J K¯¹ mol-¹
Enthalpy of vaporization, AvapH = 35.2 kJ mol-¹ at 64.7 °C and 1.00 atm
Enter answers that are accurate to three (3) or more significant figures.
q= Number J
W= Number J
AU= Number J
ΔΗ= Number J
JK-1
AS = Number
ASsurr =
ASuniv
=
Number JK-1
JK-1
Number
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What are the values of q, w, AU, AH, AS, ASsurr, and ASuniv for the following a constant pressure process for a
system containing 0.934 moles of CH3OH ?
CH3OH(I, 22.0 °C, 1.00 atm) → CH3OH(g, 125.0 °C, 1.00 atm)
Assume that the volume of CH3OH(I) is much less than that of CH3OH(g) and that CH3OH(g) behaves as an ideal
gas. Also, assume that the temperature of the surroundings is 125.0 °C.
Data:
Molar heat capacity for CH3OH(I), Cp,m = 81.1 J K-¹ mol-1
Molar heat capacity for CH3OH(g), Cp,m = 44.1 J K-1 mol-¹
Enthalpy of vaporization, AvapH = 35.2 kJ mol-¹ at 64.7 °C and 1.00 atm
Enter answers that are accurate to three (3) or more significant figures.
Chapter 4 Solutions
Physical Chemistry
Ch. 4 - List the sets of conditions that allow dS, dU, and...Ch. 4 - Explain why conditions for using S>0 as a strict...Ch. 4 - Explain how the equation dU+pdVTdS0 is consistent...Ch. 4 - Explain why the spontaneity conditions given in...Ch. 4 - Prove that the adiabatic free expansion of an...Ch. 4 - Derive equation 4.6 from equation 4.5.Ch. 4 - Derive equation 4.8 from equation 4.7.Ch. 4 - The third part of equation 4.9 mentions a...Ch. 4 - Calculate A for a process in which 0.160mole of an...Ch. 4 - What is the maximum amount of non-pV work that can...
Ch. 4 - Consider a piston whose compression ratio is 10:1;...Ch. 4 - When one dives, water pressure increases by 1atm...Ch. 4 - Calculate G(25C) for this chemical reaction, which...Ch. 4 - Thermodynamic properties can also be determined...Ch. 4 - Calculate G in two different ways for the...Ch. 4 - Calculate G in two different ways for the...Ch. 4 - For the reaction C(graphite)C(diamond) at 25C,...Ch. 4 - Determine G for the following reaction at 0C and...Ch. 4 - What is the maximum amount of electrical that is,...Ch. 4 - When a person performs work, it is non-pV work....Ch. 4 - Can non-pV work be obtained from a process for...Ch. 4 - Can pV work be obtained from a process for which...Ch. 4 - Batteries are chemical systems that can be used to...Ch. 4 - The value of G for any phase change at constant p...Ch. 4 - The value of G for any phase change at constant p...Ch. 4 - Under what conditions is A=0 for a phase change?...Ch. 4 - Example 4.2 calculated A for one step of a Carnot...Ch. 4 - Can CV and Cp be easily defined using the natural...Ch. 4 - Analogous to equation 4.26, what is the expression...Ch. 4 - Prob. 4.30ECh. 4 - Prob. 4.31ECh. 4 - Prob. 4.32ECh. 4 - Although ideally, U=H=0 for a gas-phase process at...Ch. 4 - Use equations 4.21 and 4.25 to explain why H and G...Ch. 4 - Prob. 4.35ECh. 4 - Which of the following functions are exact...Ch. 4 - Prob. 4.37ECh. 4 - Prob. 4.38ECh. 4 - Prob. 4.39ECh. 4 - Equation 4.19 says that (UV)S=p If we are...Ch. 4 - For an isentropic process, what is the approximate...Ch. 4 - Use the ideal gas law to demonstrate the cyclic...Ch. 4 - Prob. 4.43ECh. 4 - Prob. 4.44ECh. 4 - Evaluate (U/V)T for an ideal gas. Use the...Ch. 4 - Evaluate (U/V)T for a van der Waals gas. Use the...Ch. 4 - Repeat the previous exercise for a gas that...Ch. 4 - Determine an expression for (p/S)T for an ideal...Ch. 4 - Determine the value of the derivative {[(G)]/T}p...Ch. 4 - Prob. 4.50ECh. 4 - Prob. 4.51ECh. 4 - A 0.988-mole sample of argon expands from 25.0L to...Ch. 4 - A 3.66-mol sample of He contracts from 15.5L to...Ch. 4 - Prob. 4.54ECh. 4 - Prob. 4.55ECh. 4 - Use the Gibbs-Helmholtz equation to demonstrate...Ch. 4 - For the equation 2H2(g)+O2(g)2H2O(g)...Ch. 4 - Use equation 4.46 as an example and find an...Ch. 4 - What is the value of G when 1.00mol of water at...Ch. 4 - Prob. 4.60ECh. 4 - Prob. 4.61ECh. 4 - Prob. 4.62ECh. 4 - Prob. 4.63ECh. 4 - Prob. 4.64ECh. 4 - What is the change in the chemical potential of a...Ch. 4 - Prob. 4.66ECh. 4 - Prob. 4.67ECh. 4 - Prob. 4.68ECh. 4 - Prob. 4.69ECh. 4 - Can equation 4.62 be used to calculate for an...Ch. 4 - Prob. 4.71ECh. 4 - Of helium and oxygen gases, which one do you...Ch. 4 - Prob. 4.73ECh. 4 - Use equation 4.39 to determine a numerical value...Ch. 4 - Prob. 4.75ECh. 4 - Prob. 4.76E
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- Use the data in Table 2.2 to determine Hp T for Ar at 0C and 1atm. Make any reasonable assumptions necessary.arrow_forward6.21. What assumption is used in the integration of equation 6.11 to get equation 6.12?arrow_forwardWhich of the following quantities can be taken to be independent of temperature? independent of pressure? (a) H for a reaction (b) S for a reaction (c) G for a reaction (d) S for a substancearrow_forward
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