OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781285460420
Author: John W. Moore; Conrad L. Stanitski
Publisher: Cengage Learning US
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Chapter 16.5, Problem 16.4PSP
Interpretation Introduction
Interpretation:
Whether the synthesis of ammonia from nitrogen and hydrogen gas is prodict-favored or not at
Concept Introduction:
The term entropy is used to represent the randomness in a system. When a system moves from an ordered arrangement to a less order arrangement, then the entropy of the system increases. The second law of
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Gibbs free energy (G�) is a measure of the spontaneity of a chemical reaction. It is the chemical potential for a reaction, and is minimized at equilibrium. It is defined as
G=H−TS�=�−��
where H� is enthalpy, T� is temperature, and S� is entropy.
The chemical reaction that causes magnesium to corrode in air is given by
2Mg+O2→2MgO2Mg+O2→2MgO
in which at 298 K, ΔH∘rxn = −1204 kJΔ�rxn∘ = −1204 kJ and ΔS∘rxn = −217.1 J/KΔ�rxn∘ = −217.1 J/K.
Part A
Part complete
What is the standard Gibbs free energy for this reaction? Assume the commonly used standard reference temperature of 298 K.
Part B
What is the Gibbs free energy for this reaction at 5958 KK ? Assume that ΔHΔ� and ΔSΔ� do not change with temperature.
Express your answer to two decimal places and include the appropriate units.
Part C
At what temperature Teq�eq do the forward and reverse corrosion reactions occur in equilibrium?
Express your answer as an integer and include the appropriate units.
How much energy (at constant temperature and pressure) must be supplied as heat to 10.0 g of chlorine gas (as Cl2) to produce a plasma composed of Cl- and Cl+ ions? The enthalpy of ionization of Cl(g) is +12575 kJ mol-1 and its electron gain enthalpy is -349 kJ mol-1. Hence identify the standardenthalpy of ionization of Cl- (g).
(b)
Consider the dissociation of molecular chlorine, with an equilibrium constant K =
0.44, at a certain temperature and a pressure of 1.00 bar, described by the
following chemical equilibrium reaction:
Cl2(g) = 2 Cl(g),
Calculate the following:
(i) The dissociation temperature (in Kelvins) of molecular chlorine, given that the
standard Gibbs free energy change of the reaction is AG = 19 kJ mol-1.
(ii) The degree of dissociation (a) of molecular chlorine
(iii) If the equilibrium constant at a higher temperature of 3455 K is K = 3.00, calculate
AH, assuming A.He to be constant up to this temperature range.
(iv) Calculate A-GⓇ and A.SⓇ at a temperature of 3455 K.
(v) Describe the position of equilibrium based on question (iv) above on the value of
AGº.
Chapter 16 Solutions
OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
Ch. 16.1 - Write a chemical equation for each process and...Ch. 16.2 - Prob. 16.2CECh. 16.3 - A chemical reaction transfers 30.8 kJ to a thermal...Ch. 16.3 - Prob. 16.3CECh. 16.3 - Prob. 16.2PSPCh. 16.3 - For each process, predict whether entropy...Ch. 16.4 - Calculate the entropy change for each of these...Ch. 16.5 - The reaction of carbon monoxide with hydrogen to...Ch. 16.5 - Prob. 16.4PSPCh. 16.5 - Prob. 16.6CE
Ch. 16.5 - Prob. 16.8ECh. 16.6 - Prob. 16.9CECh. 16.6 - In the text we concluded that the reaction to...Ch. 16.6 - Prob. 16.10CECh. 16.6 - Prob. 16.6PSPCh. 16.7 - Prob. 16.7PSPCh. 16.7 - Prob. 16.8PSPCh. 16.7 - Prob. 16.9PSPCh. 16.8 - Predict whether each reaction is reactant-favored...Ch. 16.9 - Prob. 16.13ECh. 16.9 - Prob. 16.11PSPCh. 16.9 - Prob. 16.12PSPCh. 16.9 - Prob. 16.14ECh. 16.11 - All of these substances are stable with respect to...Ch. 16 - Define the terms product-favored System and...Ch. 16 - What are the two ways that a final chemical state...Ch. 16 - Define the term entropy, and give an example of a...Ch. 16 - Prob. 4QRTCh. 16 - Prob. 5QRTCh. 16 - Prob. 6QRTCh. 16 - Prob. 7QRTCh. 16 - Prob. 8QRTCh. 16 - Prob. 9QRTCh. 16 - Prob. 10QRTCh. 16 - Prob. 11QRTCh. 16 - Prob. 12QRTCh. 16 - Prob. 13QRTCh. 16 - Prob. 14QRTCh. 16 - Prob. 15QRTCh. 16 - Prob. 16QRTCh. 16 - Prob. 17QRTCh. 16 - Suppose you have four identical molecules labeled...Ch. 16 - For each process, tell whether the entropy change...Ch. 16 - Prob. 20QRTCh. 16 - For each situation described in Question 13,...Ch. 16 - Prob. 22QRTCh. 16 - Prob. 23QRTCh. 16 - Prob. 24QRTCh. 16 - Prob. 25QRTCh. 16 - Prob. 26QRTCh. 16 - Prob. 27QRTCh. 16 - Prob. 28QRTCh. 16 - Prob. 29QRTCh. 16 - Prob. 30QRTCh. 16 - Prob. 31QRTCh. 16 - Diethyl ether, (C2H5)2O, was once used as an...Ch. 16 - Calculate rS for each substance when the quantity...Ch. 16 - Prob. 34QRTCh. 16 - Prob. 35QRTCh. 16 - Check your predictions in Question 28 by...Ch. 16 - Prob. 37QRTCh. 16 - Prob. 38QRTCh. 16 - Prob. 39QRTCh. 16 - Prob. 40QRTCh. 16 - Prob. 41QRTCh. 16 - Prob. 42QRTCh. 16 - Prob. 43QRTCh. 16 - Prob. 44QRTCh. 16 - Prob. 45QRTCh. 16 - Prob. 46QRTCh. 16 - Hydrogen bums in air with considerable heat...Ch. 16 - Prob. 48QRTCh. 16 - Prob. 49QRTCh. 16 - Prob. 50QRTCh. 16 - Prob. 51QRTCh. 16 - The reaction of magnesium with water can be used...Ch. 16 - Prob. 53QRTCh. 16 - Prob. 54QRTCh. 16 - Prob. 55QRTCh. 16 - Prob. 56QRTCh. 16 - Prob. 57QRTCh. 16 - Prob. 58QRTCh. 16 - Prob. 59QRTCh. 16 - Prob. 60QRTCh. 16 - Prob. 61QRTCh. 16 - Estimate ΔrG° at 2000. K for each reaction in...Ch. 16 - Prob. 63QRTCh. 16 - Some metal oxides, such as lead(II) oxide, can be...Ch. 16 - Prob. 65QRTCh. 16 - Prob. 66QRTCh. 16 - Use data from Appendix J to obtain the equilibrium...Ch. 16 - Prob. 68QRTCh. 16 - Prob. 69QRTCh. 16 - Use the data in Appendix J to calculate rG andKPat...Ch. 16 - Prob. 71QRTCh. 16 - Prob. 72QRTCh. 16 - Prob. 73QRTCh. 16 - Prob. 74QRTCh. 16 - Prob. 75QRTCh. 16 - Prob. 76QRTCh. 16 - Prob. 77QRTCh. 16 - Prob. 78QRTCh. 16 - Prob. 79QRTCh. 16 - The molecular structure shown is of one form of...Ch. 16 - Another step in the metabolism of glucose, which...Ch. 16 - In muscle cells under the condition of vigorous...Ch. 16 - The biological oxidation of ethanol, C2H5OH, is...Ch. 16 - Prob. 86QRTCh. 16 - For one day, keep a log of all the activities you...Ch. 16 - Billions of pounds of acetic acid are made each...Ch. 16 - Determine the standard Gibbs free energy change,...Ch. 16 - There are millions of organic compounds known, and...Ch. 16 - Actually, the carbon in CO2(g) is...Ch. 16 - The standard molar entropy of methanol vapor,...Ch. 16 - The standard molar entropy of iodine vapor, I2(g),...Ch. 16 - Prob. 94QRTCh. 16 - Prob. 96QRTCh. 16 - Prob. 97QRTCh. 16 - Prob. 98QRTCh. 16 - Prob. 99QRTCh. 16 - Prob. 100QRTCh. 16 - Appendix J lists standard molar entropies S, not...Ch. 16 - When calculating rSfromSvalues, it is necessary to...Ch. 16 - Prob. 103QRTCh. 16 - Explain how the entropy of the universe increases...Ch. 16 - Prob. 105QRTCh. 16 - Prob. 106QRTCh. 16 - Prob. 107QRTCh. 16 - Prob. 108QRTCh. 16 - Prob. 109QRTCh. 16 - Reword the statement in Question 109 so that it is...Ch. 16 - Prob. 111QRTCh. 16 - Prob. 112QRTCh. 16 - Prob. 113QRTCh. 16 - Prob. 114QRTCh. 16 - Prob. 115QRTCh. 16 - Prob. 116QRTCh. 16 - From data in Appendix J, estimate (a) the boiling...Ch. 16 - Prob. 118QRTCh. 16 - Prob. 119QRTCh. 16 - Prob. 120QRTCh. 16 - Prob. 121QRTCh. 16 - Prob. 122QRTCh. 16 - Prob. 123QRTCh. 16 - Prob. 124QRTCh. 16 - Prob. 125QRTCh. 16 - Prob. 126QRTCh. 16 - The standard equilibrium constant is 2.1109for...Ch. 16 - Prob. 16.ACPCh. 16 - Prob. 16.CCPCh. 16 - Prob. 16.DCPCh. 16 - Consider planet Earth as a thermodynamic system....
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