Chemistry: A Molecular Approach
3rd Edition
ISBN: 9780321809247
Author: Nivaldo J. Tro
Publisher: Prentice Hall
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Chapter 17, Problem 36E
Interpretation Introduction
Interpretation: The temperature at which the change in entropy for the reaction is equal to the change in entropy for the surroundings is to be determined.
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MISSED THIS? Read Section 19.9 (Pages 878-881); Watch IWE 19.10
Consider the following reaction:
CH3OH(g)
CO(g) + 2H2(g)
(Note that AG,CH3OH(g) = -162.3 kJ/mol and AG,co(g)=-137.2 kJ/mol.)
Part A
Calculate AG for this reaction at 25 °C under the following conditions:
PCH₂OH
Pco
PH2
0.815 atm
=
0.140 atm
0.170 atm
Express your answer in kilojoules to three significant figures.
Ο ΑΣΦ
AG = -150
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kJ
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Calculate the free energy change under nonstandard conditions (AGrxn) by using the following relationship:
AGrxn = AGrxn + RTInQ,
AGxn+RTInQ,
where AGxn is the standard free energy change, R is the ideal gas constant, T is the temperature in kelvins, a
is the reaction quotient.
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Chapter 17 Solutions
Chemistry: A Molecular Approach
Ch. 17 - Prob. 1SAQCh. 17 - Prob. 2SAQCh. 17 - Q3. Arrange the gases—F2, Ar, and CH3F—in order of...Ch. 17 - Q5. A reaction has a ΔHrxn = 54.2 kJ. Calculate...Ch. 17 - Prob. 5SAQCh. 17 - Q7. Use standard entropies to calculate for the...Ch. 17 - Q8. Use standard free energies of formation to...Ch. 17 - Q9. Find ΔG$$ for the reaction 2 A + B → 2 C from...Ch. 17 - Prob. 9SAQCh. 17 - Prob. 10SAQ
Ch. 17 - Prob. 11SAQCh. 17 - Prob. 12SAQCh. 17 - Prob. 13SAQCh. 17 - Prob. 14SAQCh. 17 - Prob. 15SAQCh. 17 - 1. What is the first law of thermodynamics, and...Ch. 17 - Prob. 2ECh. 17 - 3. What is a perpetual motion machine? Can such a...Ch. 17 - 4. Is it more efficient to heat your home with a...Ch. 17 - 5. What is a spontaneous process? Provide an...Ch. 17 - Prob. 6ECh. 17 - Prob. 7ECh. 17 - Prob. 8ECh. 17 - Prob. 9ECh. 17 - Prob. 10ECh. 17 - Prob. 11ECh. 17 - Prob. 12ECh. 17 - Prob. 13ECh. 17 - Prob. 14ECh. 17 - Prob. 15ECh. 17 - 16. Predict the spontaneity of a reaction (and the...Ch. 17 - 17. State the third law of thermodynamics and...Ch. 17 - 18. Why is the standard entropy of a substance in...Ch. 17 - Prob. 19ECh. 17 - Prob. 20ECh. 17 - 21. What are three different methods to calculate...Ch. 17 - Prob. 22ECh. 17 - Prob. 23ECh. 17 - Prob. 24ECh. 17 - Prob. 25ECh. 17 - Prob. 26ECh. 17 - 27. Which of these processes is spontaneous?
a....Ch. 17 - 28. Which of these processes are nonspontaneous?...Ch. 17 - 29. Two systems, each composed of two particles...Ch. 17 - 30. Two systems, each composed of three particles...Ch. 17 - 35. Without doing any calculations, determine the...Ch. 17 - 36. Without doing any calculations, determine the...Ch. 17 - Prob. 33ECh. 17 - 38. Without doing any calculations, determine the...Ch. 17 - 39. Calculate ΔSsurr at the indicated temperature...Ch. 17 - Prob. 36ECh. 17 - 41. Given the values of ΔH$$, ΔS$$, and T,...Ch. 17 - Prob. 38ECh. 17 - Prob. 39ECh. 17 - 4440. Calculate the change in Gibbs free energy...Ch. 17 - Calculate the free energy change for this reaction...Ch. 17 - Prob. 42ECh. 17 - Prob. 43ECh. 17 - Prob. 44ECh. 17 - Prob. 45ECh. 17 - 50. What is the molar entropy of a pure crystal at...Ch. 17 - Prob. 47ECh. 17 - 52. For each pair of substances, choose the one...Ch. 17 - 53. Rank each set of substances in order of...Ch. 17 - 54. Rank each set of substances in order of...Ch. 17 - Prob. 51ECh. 17 - Prob. 52ECh. 17 - Prob. 53ECh. 17 - Prob. 54ECh. 17 - Prob. 55ECh. 17 - Prob. 56ECh. 17 - Prob. 57ECh. 17 - 62. For each reaction, calculate , , and at 25 °C...Ch. 17 - 63. Use standard free energies of formation to...Ch. 17 - 64. Use standard free energies of formation to...Ch. 17 - 65. Consider the reaction:
2 NO(g) + O2(g) → 2...Ch. 17 - Prob. 62ECh. 17 - 67. Determine ΔG° for the reaction:
Fe2O3(s) + 3...Ch. 17 - 68. Calculate for the reaction:
CaCO3(s) → CaO(s)...Ch. 17 - 69. Consider the sublimation of iodine at 25.0 °C...Ch. 17 - 70. Consider the evaporation of methanol at 25.0...Ch. 17 - 71. Consider the reaction:
CH3OH(g) CO(g) + 2...Ch. 17 - Prob. 68ECh. 17 - Prob. 69ECh. 17 - Prob. 70ECh. 17 - Prob. 71ECh. 17 - 7762. Consider the reaction:
I2(g) + Cl2(g) 2...Ch. 17 - 77. Estimate the value of the equilibrium constant...Ch. 17 - 78. Estimate the value of the equilibrium constant...Ch. 17 - 79. Consider the reaction:
H2(g) + I2(g) 2...Ch. 17 - Prob. 76ECh. 17 - 81. The change in enthalpy () for a reaction is...Ch. 17 - Prob. 78ECh. 17 - 83. Determine the sign of ΔSsys for each...Ch. 17 - 84. Determine the sign of ΔSsys for each...Ch. 17 - 85. Our atmosphere is composed primarily of...Ch. 17 - Prob. 82ECh. 17 - 87. Ethene (C2H4) can be halogenated by the...Ch. 17 - 88. H2 reacts with the halogens (X2) according to...Ch. 17 - 89. Consider this reaction occurring at 298...Ch. 17 - 90. Consider this reaction occurring at 298...Ch. 17 - Prob. 87ECh. 17 - Prob. 88ECh. 17 - 93. These reactions are important in catalytic...Ch. 17 - Prob. 90ECh. 17 - Prob. 91ECh. 17 - Prob. 92ECh. 17 - 97. Consider the reaction X2(g) → 2 X(g). When a...Ch. 17 - 98. Dinitrogen tetroxide decomposes to nitrogen...Ch. 17 - 99. Indicate and explain the sign of ΔSuniv for...Ch. 17 - Prob. 96ECh. 17 - Prob. 97ECh. 17 - Prob. 98ECh. 17 - Prob. 99ECh. 17 - Prob. 100ECh. 17 - Prob. 101ECh. 17 - Prob. 102ECh. 17 - Prob. 103ECh. 17 - 108. The salt ammonium nitrate can follow three...Ch. 17 - 109. Given the data, calculate ΔSvap for each of...Ch. 17 - Prob. 106ECh. 17 - Prob. 107ECh. 17 - Prob. 108ECh. 17 - Prob. 109ECh. 17 - 114. Which statement is true?
a. A reaction in...Ch. 17 - Prob. 111ECh. 17 - Prob. 112ECh. 17 - Prob. 113E
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