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OWLv2 for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 1 term (6 months)
11th Edition
ISBN: 9781305673939
Author: Darrell Ebbing; Steven D. Gammon
Publisher: Cengage Learning US
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Chapter 18, Problem 18.79QP
Is the following reaction spontaneous as written? Explain. Do whatever calculation is needed to answer the question.
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Chapter 18 Solutions
OWLv2 for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 1 term (6 months)
Ch. 18.2 - You have a sample of 1.0 mg of solid iodine at...Ch. 18.2 - Liquid ethanol, C2H5OH(l), at 25C has an entropy...Ch. 18.3 - Prob. 18.2ECh. 18.3 - Prob. 18.3ECh. 18.4 - Calculate G for the following reaction at 25C. Use...Ch. 18.4 - Prob. 18.5ECh. 18.4 - Prob. 18.6ECh. 18.4 - Prob. 18.2CCCh. 18.6 - Give the expression for K for each of the...Ch. 18.6 - Use the data from Table 18.2 to obtain the...
Ch. 18.6 - Prob. 18.9ECh. 18.6 - Prob. 18.3CCCh. 18.7 - Consider the decomposition of dinitrogen...Ch. 18.7 - The thermodynamic equilibrium constant for the...Ch. 18.7 - To what temperature must magnesium carbonate be...Ch. 18 - What is a spontaneous process? Give three examples...Ch. 18 - Which contains greater entropy, a quantity of...Ch. 18 - State the second law of thermodynamics.Ch. 18 - The entropy change S for a phase transition equals...Ch. 18 - Describe how the standard entropy of hydrogen gas...Ch. 18 - Describe what you would look for in a reaction...Ch. 18 - Define the free energy G. How is G related to H...Ch. 18 - What is meant by the standard free-energy change G...Ch. 18 - Prob. 18.9QPCh. 18 - Prob. 18.10QPCh. 18 - Prob. 18.11QPCh. 18 - Prob. 18.12QPCh. 18 - Prob. 18.13QPCh. 18 - Prob. 18.14QPCh. 18 - Prob. 18.15QPCh. 18 - Prob. 18.16QPCh. 18 - Prob. 18.17QPCh. 18 - You run a reaction that has a negative entropy...Ch. 18 - Prob. 18.19QPCh. 18 - Given the following information at 25C, calculate...Ch. 18 - Prob. 18.21QPCh. 18 - Prob. 18.22QPCh. 18 - For each of the following statements, indicate...Ch. 18 - Which of the following are spontaneous processes?...Ch. 18 - Prob. 18.25QPCh. 18 - Predict the sign of the entropy change for each of...Ch. 18 - Hypothetical elements A(g) and B(g) are introduced...Ch. 18 - Prob. 18.28QPCh. 18 - Prob. 18.29QPCh. 18 - Describe how you would expect the spontaneity (G)...Ch. 18 - Chloroform, CHCl3, is a solvent and has been used...Ch. 18 - Diethyl ether (known simply as ether), (C2H5)2O,...Ch. 18 - The enthalpy change when liquid methanol. CH3OH,...Ch. 18 - The heat of vaporization of carbon disulfide, CS2,...Ch. 18 - Predict the sign of S, if possible, for each of...Ch. 18 - Predict the sign of S, if possible, for each of...Ch. 18 - Calculate S for the following reactions, using...Ch. 18 - Calculate S for the following reactions, using...Ch. 18 - Calculate S for the reaction...Ch. 18 - What is the change in entropy, S, for the reaction...Ch. 18 - Using enthalpies of formation (Appendix C),...Ch. 18 - Using enthalpies of formation (Appendix C),...Ch. 18 - The free energy of formation of one mole of...Ch. 18 - The free energy of formation of one mole of...Ch. 18 - Calculate the standard free energy of the...Ch. 18 - Calculate the standard free energy of the...Ch. 18 - On the basis of G for each of the following...Ch. 18 - For each of the following reactions, state whether...Ch. 18 - Calculate H and G for the following reactions at...Ch. 18 - Calculate H and G for the following reactions at...Ch. 18 - Consider the reaction of 2 mol H2(g) at 25C and 1...Ch. 18 - Consider the reaction of 1 mol H2(g) at 25C and 1...Ch. 18 - What is the maximum work that could be obtained...Ch. 18 - What is the maximum work that could be obtained...Ch. 18 - Give the expression for the thermodynamic...Ch. 18 - Write the expression for the thermodynamic...Ch. 18 - What is the standard free-energy change G at 25C...Ch. 18 - What is the standard free-energy change G at 25C...Ch. 18 - Calculate the standard free-energy change and the...Ch. 18 - Calculate the standard free-energy change and the...Ch. 18 - Obtain the equilibrium constant Kc at 25C from the...Ch. 18 - Calculate the equilibrium constant Kc at 25C from...Ch. 18 - Use data given in Tables 6.2 and 18.1 to obtain...Ch. 18 - Use data given in Tables 6.2 and 18.1 to obtain...Ch. 18 - Sodium carbonate, Na2CO3, can be prepared by...Ch. 18 - Oxygen was first prepared by heating mercury(II)...Ch. 18 - Prob. 18.67QPCh. 18 - The combustion of acetylene, C2H2, is a...Ch. 18 - Prob. 18.69QPCh. 18 - Prob. 18.70QPCh. 18 - Acetic acid, CH3COOH, freezes at 16.6C. The heat...Ch. 18 - Acetone, CH3COCH3, boils at 56C. The heat of...Ch. 18 - Prob. 18.73QPCh. 18 - Prob. 18.74QPCh. 18 - Prob. 18.75QPCh. 18 - Ethanol burns in air or oxygen according to the...Ch. 18 - Acetic acid in vinegar results from the bacterial...Ch. 18 - Prob. 18.78QPCh. 18 - Is the following reaction spontaneous as written?...Ch. 18 - Is the following reaction spontaneous as written?...Ch. 18 - Prob. 18.81QPCh. 18 - The reaction N2(g)+3H2(g)2NH3(g) is spontaneous at...Ch. 18 - Prob. 18.83QPCh. 18 - Calculate G at 25C for the reaction...Ch. 18 - Prob. 18.85QPCh. 18 - Consider the reaction CS2(g)+4H2(g)CH4(g)+2H2S(g)...Ch. 18 - Prob. 18.87QPCh. 18 - a From a consideration of the following reactions,...Ch. 18 - For the reaction CH3OH(l)+32O2(g)2H2O(l)+CO2(g)...Ch. 18 - Prob. 18.90QPCh. 18 - Prob. 18.91QPCh. 18 - Tungsten is usually produced by the reduction of...Ch. 18 - For the decomposition of formic acid,...Ch. 18 - Prob. 18.94QPCh. 18 - For the reaction 2Cu(s)+S(s)Cu2S(s) H and G are...Ch. 18 - Prob. 18.96QPCh. 18 - When 1.000 g of gaseous butane, C4H10, is burned...Ch. 18 - When 1.000 g of ethylene glycol, C2H6O2, is burned...Ch. 18 - a Calculate K1, at 25C for phosphoric acid:...Ch. 18 - a Calculate K1, at 25C for sulfurous acid:...Ch. 18 - The direct reaction of iron(III) oxide. Fe2O3, to...Ch. 18 - Prob. 18.102QPCh. 18 - Prob. 18.103QPCh. 18 - Prob. 18.104QPCh. 18 - Prob. 18.105QPCh. 18 - Cobalt(II) chloride hexahydrate, CoCl26H2O, is a...Ch. 18 - Prob. 18.107QPCh. 18 - Hydrogen gas and iodine vapor react to produce...Ch. 18 - Silver carbonate, Ag2CO3, is a light yellow...Ch. 18 - Prob. 18.110QPCh. 18 - Adenosine triphosphate, ATP, is used as a...Ch. 18 - Prob. 18.112QPCh. 18 - Prob. 18.113QPCh. 18 - Prob. 18.114QPCh. 18 - Sodium acetate crystallizes from a supersaturated...Ch. 18 - According to a source, lithium peroxide (Li2O2)...Ch. 18 - Tetrachloromethane (carbon tetrachloride), CCl4,...Ch. 18 - Prob. 18.118QPCh. 18 - Prob. 18.119QPCh. 18 - Prob. 18.120QPCh. 18 - Prob. 18.121QPCh. 18 - Coal is used as a fuel in some electric-generating...Ch. 18 - Hydrogen bromide dissociates into its gaseous...Ch. 18 - Hydrogen gas and iodine gas react to form hydrogen...Ch. 18 - Prob. 18.125QPCh. 18 - Prob. 18.126QPCh. 18 - Ka for acetic acid at 25.0C is 1754 105. At...Ch. 18 - Ksp for silver chloride at 25.0C is 1.782 1010....
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- What is the sign of the standard Gibbs free-energy change at low temperatures and at high temperatures for the explosive decomposition of TNT? Use your knowledge of TNT and the chemical equation, particularly the phases, to answer this question. (Thermodynamic data for TNT are not in Appendix G.) 2C7H5N3O6(s) 3N2(g) + 5H2O() + 7C(s) + 7CO(g)arrow_forwardFor each of the following processes, identify the systemand the surroundings. Identify those processes that arespontaneous. For each spontaneous process, identify theconstraint that has been removed to enable the process to occur: Ammonium nitrate dissolves in water. Hydrogen and oxygen explode in a closed bomb. A rubber band is rapidly extended by a hangingweight. The gas in a chamber is slowly compressed by aweighted piston. A glass shatters on the floor.arrow_forwardDetermine the standard Gibbs free energy change, rG, for the reactions of liquid methanol, of CO(g), and ofethyne, C2H2(g), with oxygen gas to form gaseous carbondioxide and (if hydrogen is present) liquid water at298 K. Use your calculations to decide which of thesesubstances are kinetically stable and which are thermodynamically stable: CH3OH(), CO(g), C2H9(g), CO2(g),H2O().arrow_forward
- Calculate the standard Gibbs free-energy change when SO3 forms from SO2 and O2 at 298 K. Why is sulfur trioxide an important substance to study? (Hint: What happens when it combines with water?)arrow_forwardIs the formation of ozone (O3(g)) from oxygen (O2(g)) spontaneous at room temperature under standard state conditions?arrow_forwardThe formation of aluminum oxide from its elements is highly exothermic. If 2.70 g Al metal is burned in pure O2 to give A12O3, calculate how much thermal energy is evolved in the process (at constant pressure).arrow_forward
- Actually, the carbon in CO2(g) is thermodynamically unstable with respect to the carbon in calcium carbonate(limestone). Verify this by determining the standardGibbs free energy change for the reaction of lime,CaO(s), with CO2(g) to make CaCO3(s).arrow_forwardConsider the reaction of 2 mol H2(g) at 25C and 1 atm with 1 mol O2(g) at the same temperature and pressure to produce liquid water at these conditions. If this reaction is run in a controlled way to generate work, what is the maximum useful work that can be obtained? How much entropy is produced in this case?arrow_forwardA pot of cold water is heated on a stove, and when the water boils, a fresh egg is placed in the water to cook. Describe the events that are occurring in terms of the zeroth law of thermodynamics.arrow_forward
- 2. In which of the following reactions is there a significant transfer of energy as work from the system to the surroundings? This occurs if there is a change in the number of moles of gases. C(s) + O2(g) → CO2(g) CH4(g) + 2 O2(g) → CO2g) + 2 H2O(g) 2 C(s) + O2(g) → 2 CO(g) 2 Mg(s) + O2(g) → 2 MgO(s)arrow_forwardCoal is used as a fuel in some electric-generating plants. Coal is a complex material, but for simplicity we may consider it to be a form of carbon. The energy that can be derived from a fuel is sometimes compared with the enthalpy of the combustion reaction: C(s)+O2(g)CO2(g) Calculate the standard enthalpy change for this reaction at 25C. Actually, only a fraction of the heat from this reaction is available to produce electric energy. In electric generating plants, this reaction is used to generate heat for a steam engine, which turns the generator. Basically the steam engine is a type of heat engine in which steam enters the engine at high temperature (Th), work is done, and the steam then exits at a lower temperature (Tl). The maximum fraction, f, of heat available to produce useful energy depends on the difference between these temperatures (expressed in kelvins), f = (Th Tl)/Th. What is the maximum heat energy available for useful work from the combustion of 1.00 mol of C(s) to CO2(g)? (Assume the value of H calculated at 25C for the heat obtained in the generator.) It is possible to consider more efficient ways to obtain useful energy from a fuel. For example, methane can be burned in a fuel cell to generate electricity directly. The maximum useful energy obtained in these cases is the maximum work, which equals the free-energy change. Calculate the standard free-energy change for the combustion of 1.00 mol of C(s) to CO2(g). Compare this value with the maximum obtained with the heat engine described here.arrow_forwardWhat happens to the entropy of the universe during a spontaneous process?arrow_forward
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