Interpretation Introduction Interpretation: The equilibrium constant for the given reaction at 298 K and the percentage of N 2 O 4 that decomposes to N O 2 at 388 K are to be calculated. Explanation Calculation of equilibrium constant for the reaction at 298 K temperature. Initial pressure N 2 O 4 = 0.100 a t m Percentage decomposition of N 2 O 4 = 58 % C h a n g e i n p r e s s u r e o f N 2 O 4 = 0.100 a t m × 58 % = 0.100 a t m × 0.58 = 0.058 a t m ICE table to know the equilibrium pressures is as follows: N 2 O 4 ( g ) → 2 N O 2 ( g ) I ( a t m ) 0.100 a t m 0 a t m C ( a t m ) − 0.0580 a t m + 2 × 0.0580 a t m E ( a t m ) 0.0420 a t m 0.116 a t m Calculate the equilibrium constant ( K 1 ) at 298 K as follows: K 1 = P N O 2 2 P N 2 O 4 = ( 0.116 ) 2 0.0420 = 0.32 Change in enthalpy of the reaction Δ H o r x n = 55.3 kJ/mol Δ H o r x n = 55.3 k J m o l × 10 3 J 1 k J = 5.53 × 10 4 J/mo l At temperature T 1 = 298 K , equilibrium constant of the reaction is K 1 = 0.32 . At temperature T 2 = 388 K , equilibrium constant of the reaction is K 2 = ? . Calculate the equilibrium constant of the reaction at 388 K temperature by using the following equation: ln ( K 2 K 1 ) = − Δ H rxn º R ( 1 T 2 − 1 T 1 ) Here, R is gas constant ( 8

Masteringchemistry with Pearson Etext -- Standalone Access Card -- For Chemistry

3rd Edition

ISBN: 9780321806383

Author: Nivaldo J. Tro

Publisher: PEARSON

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Chapter 17, Problem 94E

Interpretation Introduction

Interpretation: The equilibrium constant for the given reaction at 298 K and the percentage of N2O4 that decomposes to NO2 at 388 K are to be calculated.

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Chapter 17, Problem 93E

Chapter 17, Problem 95E

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Chapter 17 Solutions

Masteringchemistry with Pearson Etext -- Standalone Access Card -- For Chemistry

Ch. 17 - Prob. 1SAQ Ch. 17 - Prob. 2SAQ Ch. 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. 5SAQ Ch. 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. 9SAQ Ch. 17 - Prob. 10SAQ

Ch. 17 - Prob. 11SAQ Ch. 17 - Prob. 12SAQ Ch. 17 - Prob. 13SAQ Ch. 17 - Prob. 14SAQ Ch. 17 - Prob. 15SAQ Ch. 17 - 1. What is the first law of thermodynamics, and...Ch. 17 - Prob. 2E Ch. 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. 6E Ch. 17 - Prob. 7E Ch. 17 - Prob. 8E Ch. 17 - Prob. 9E Ch. 17 - Prob. 10E Ch. 17 - Prob. 11E Ch. 17 - Prob. 12E Ch. 17 - Prob. 13E Ch. 17 - Prob. 14E Ch. 17 - Prob. 15E Ch. 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. 19E Ch. 17 - Prob. 20E Ch. 17 - 21. What are three different methods to calculate...Ch. 17 - Prob. 22E Ch. 17 - Prob. 23E Ch. 17 - Prob. 24E Ch. 17 - Prob. 25E Ch. 17 - Prob. 26E Ch. 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. 33E Ch. 17 - 38. Without doing any calculations, determine the...Ch. 17 - 39. Calculate ΔSsurr at the indicated temperature...Ch. 17 - Prob. 36E Ch. 17 - 41. Given the values of ΔH$$, ΔS$$, and T,...Ch. 17 - Prob. 38E Ch. 17 - Prob. 39E Ch. 17 - 4440. Calculate the change in Gibbs free energy...Ch. 17 - Calculate the free energy change for this reaction...Ch. 17 - Prob. 42E Ch. 17 - Prob. 43E Ch. 17 - Prob. 44E Ch. 17 - Prob. 45E Ch. 17 - 50. What is the molar entropy of a pure crystal at...Ch. 17 - Prob. 47E Ch. 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. 51E Ch. 17 - Prob. 52E Ch. 17 - Prob. 53E Ch. 17 - Prob. 54E Ch. 17 - Prob. 55E Ch. 17 - Prob. 56E Ch. 17 - Prob. 57E Ch. 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. 62E Ch. 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. 68E Ch. 17 - Prob. 69E Ch. 17 - Prob. 70E Ch. 17 - Prob. 71E Ch. 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. 76E Ch. 17 - 81. The change in enthalpy () for a reaction is...Ch. 17 - Prob. 78E Ch. 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. 82E Ch. 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. 87E Ch. 17 - Prob. 88E Ch. 17 - 93. These reactions are important in catalytic...Ch. 17 - Prob. 90E Ch. 17 - Prob. 91E Ch. 17 - Prob. 92E Ch. 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. 96E Ch. 17 - Prob. 97E Ch. 17 - Prob. 98E Ch. 17 - Prob. 99E Ch. 17 - Prob. 100E Ch. 17 - Prob. 101E Ch. 17 - Prob. 102E Ch. 17 - Prob. 103E Ch. 17 - 108. The salt ammonium nitrate can follow three...Ch. 17 - 109. Given the data, calculate ΔSvap for each of...Ch. 17 - Prob. 106E Ch. 17 - Prob. 107E Ch. 17 - Prob. 108E Ch. 17 - Prob. 109E Ch. 17 - 114. Which statement is true? a. A reaction in...Ch. 17 - Prob. 111E Ch. 17 - Prob. 112E Ch. 17 - Prob. 113E

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