Connect for Chemistry
13th Edition
ISBN: 9781260161854
Author: Raymond Chang, Jason Overby
Publisher: Mcgraw-hill Higher Education (us)
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Chapter 17, Problem 17.2QP
State which of the following processes are spontaneous and which are nonspontaneous: (a) dissolving table salt (NaCl) in hot soup; (b) climbing Mt. Everest; (c) spreading fragrance in a room by removing the cap from a perfume bottle; (d) separating helium and neon from a mixture of the gases.
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Chapter 17 Solutions
Connect for Chemistry
Ch. 17.3 - How does the entropy of a system change for each...Ch. 17.3 - For which of the following physical changes is S...Ch. 17.3 - Determine if the sign for S is positive or...Ch. 17.4 - Prob. 2PECh. 17.4 - Prob. 3PECh. 17.4 - Calculate the standard entropy change for the...Ch. 17.4 - Consider the gas-phase reaction of A2 (blue) and...Ch. 17.5 - Prob. 4PECh. 17.5 - The molar heats of fusion and vaporization of...Ch. 17.5 - Under what circumstances will an endothermic...
Ch. 17.5 - Prob. 2RCFCh. 17.5 - Prob. 3RCFCh. 17.5 - Prob. 4RCFCh. 17.6 - Calculate the equilibrium constant (KP) for the...Ch. 17.6 - Prob. 7PECh. 17.6 - Prob. 8PECh. 17.6 - A reaction has a positive H and a negative S.Is...Ch. 17.6 - For the reaction A(g)+B(g)C(g) G = 33.3 kJ/mol at...Ch. 17.6 - For the reaction C(aq)A(aq)+B(aq) G = 1.95 kJ/mol...Ch. 17 - Explain what is meant by a spontaneous process....Ch. 17 - State which of the following processes are...Ch. 17 - Prob. 17.3QPCh. 17 - Define entropy. What are the units of entropy?Ch. 17 - How does the entropy of a system change for each...Ch. 17 - State the second law of thermodynamics in words...Ch. 17 - State the third law of thermodynamics and explain...Ch. 17 - For each pair of substances listed here, choose...Ch. 17 - Arrange the following substances (1 mole each) in...Ch. 17 - Using the data in Appendix 2, calculate the...Ch. 17 - Using the data in Appendix 2, calculate the...Ch. 17 - Without consulting Appendix 2, predict whether the...Ch. 17 - Prob. 17.14QPCh. 17 - Define free energy. What are its units?Ch. 17 - Why is it more convenient to predict the direction...Ch. 17 - Calculate G for the following reactions at 25C:...Ch. 17 - Calculate G for the following reactions at 25C:...Ch. 17 - From the values of H and S, predict which of the...Ch. 17 - Find the temperatures at which reactions with the...Ch. 17 - Explain the difference between G and G.Ch. 17 - Explain why Equation (17.14). is of great...Ch. 17 - Calculate KP for the following reaction at 25C:...Ch. 17 - For the autoionization of water at 25C,...Ch. 17 - Consider the following reaction at 25C:...Ch. 17 - Calculate G and KP for the following equilibrium...Ch. 17 - (a) Calculate G and KP for the following...Ch. 17 - The equilibrium constant (KP) for the reaction...Ch. 17 - Consider the decomposition of calcium carbonate:...Ch. 17 - The equilibrium constant KP for the reaction...Ch. 17 - At 25C, G for the process H2O(l)H2O(g) is 8.6...Ch. 17 - Calculate G for the process C(diamond)C(graphite)...Ch. 17 - What is a coupled reaction? What is its importance...Ch. 17 - What is the role of ATP in biological reactions?Ch. 17 - Referring to the metabolic process involving...Ch. 17 - In the metabolism of glucose, the first step is...Ch. 17 - Explain the following nursery rhyme in terms of...Ch. 17 - Calculate G for the reaction H2O(l)H+(aq)+OH(aq)...Ch. 17 - Calculate the Ssoln for the following processes:...Ch. 17 - The following reaction is spontaneous at a certain...Ch. 17 - Which of the following thermodynamic functions are...Ch. 17 - A student placed 1 g of each of three compounds A,...Ch. 17 - Use the data in Appendix 2 to calculate the...Ch. 17 - Predict the signs of H, S, and G of the system for...Ch. 17 - Prob. 17.45QPCh. 17 - Ammonium nitrate (NH4NO3) dissolves spontaneously...Ch. 17 - Calculate the equilibrium pressure of CO2 due to...Ch. 17 - Prob. 17.48QPCh. 17 - Prob. 17.49QPCh. 17 - Carbon monoxide (CO) and nitric oxide (NO) are...Ch. 17 - Prob. 17.51QPCh. 17 - Use the thermodynamic data in Appendix 2 to...Ch. 17 - Consider the reaction A B + C at 298 K. Given...Ch. 17 - The Ksp of AgCl is given in Table 16.2. What is...Ch. 17 - Prob. 17.55QPCh. 17 - Water gas, a mixture of H2 and CO, is a fuel made...Ch. 17 - Consider the following Brnstead acid-base reaction...Ch. 17 - Crystallization of sodium acetate from a...Ch. 17 - Prob. 17.59QPCh. 17 - A certain reaction is spontaneous at 72C. If the...Ch. 17 - Predict whether the entropy change is positive or...Ch. 17 - 17.62The reaction NH3(g)+HCl(g)NH4Cl(s) proceeds...Ch. 17 - Prob. 17.63QPCh. 17 - The molar heat of vaporization of ethanol is 39.3...Ch. 17 - Prob. 17.65QPCh. 17 - In the Mond process for the purification of...Ch. 17 - Calculate G and KP for the following processes at...Ch. 17 - Calculate the pressure of O2 (in atm) over a...Ch. 17 - Prob. 17.69QPCh. 17 - Prob. 17.70QPCh. 17 - Consider the reaction N2(g)+O2(g)2NO(g) Given that...Ch. 17 - Prob. 17.72QPCh. 17 - Prob. 17.73QPCh. 17 - Prob. 17.74QPCh. 17 - Prob. 17.75QPCh. 17 - Prob. 17.76QPCh. 17 - Prob. 17.77QPCh. 17 - Prob. 17.78QPCh. 17 - Prob. 17.79QPCh. 17 - Prob. 17.80QPCh. 17 - Prob. 17.81QPCh. 17 - Prob. 17.82QPCh. 17 - Prob. 17.83QPCh. 17 - Prob. 17.84QPCh. 17 - Shown here are the thermodynamic data for ethanol:...Ch. 17 - The reaction shown here is spontaneous at a...Ch. 17 - Consider two carboxylic acids (acids that contain...Ch. 17 - Many hydrocarbons exist as structural isomers,...Ch. 17 - Use the thermodynamic data in Appendix 2 to...Ch. 17 - A rubber band is stretched vertically by attaching...Ch. 17 - One of the steps in the extraction of iron from...Ch. 17 - Derive the equation G=RTln(Q/K) where Q is the...Ch. 17 - The sublimation of carbon dioxide at 78C is...Ch. 17 - Entropy has sometimes been described as times...Ch. 17 - Referring to Figure 17.1, we see that the...Ch. 17 - A student looked up the Gf, Hf, and S values for...Ch. 17 - Consider the following reaction at 298 K:...Ch. 17 - As an approximation, we can assume that proteins...Ch. 17 - Which of the following are not state functions: S,...Ch. 17 - Which of the following is not accompanied by an...Ch. 17 - Hydrogenation reactions (for example, the process...Ch. 17 - Give a detailed example of each of the following,...Ch. 17 - At 0 K, the entropy of carbon monoxide crystal is...Ch. 17 - Comment on the correctness of the analogy...Ch. 17 - The standard enthalpy of formation and the...Ch. 17 - In chemistry, the standard state for as solution...Ch. 17 - The following diagram shows the variation of the...Ch. 17 - Consider the gas-phase reaction between A2 (green)...Ch. 17 - The KP for the reaction N2+3H22NH3 is 2.4 103 at...Ch. 17 - The table shown here lists the ion-product...Ch. 17 - Draw the missing distributions in Figure 17.2....Ch. 17 - The reaction NH3(g)+HCl(g)NH4Cl(s) is spontaneous...Ch. 17 - The boiling point of diethyl ether is 34.6C....Ch. 17 - Nicotine is the compound in tobacco responsible...Ch. 17 - Estimate S for the process depicted in Figure...Ch. 17 - At what point in the series HOnH(g) (n = 1, 2, 3,...
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- What happens to the entropy of the universe during a spontaneous process?arrow_forwardHow is the sign of q, heat, defined? How does it relate to the total energy of the system?arrow_forwardConsider the decomposition of red mercury(II) oxide under standard state conditions.. 2HgO(s,red)2Hg(l)+O2(g) (a) Is the decomposition spontaneous under standard state conditions? (b) Above what temperature does the reaction become spontaneous?arrow_forward
- Which contains greater entropy, a quantity of frozen benzene or the same quantity of liquid benzene at the same temperature? Explain in terms of the dispersal of energy in the substance.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_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_forward
- Define the following: a. spontaneous process b. entropy c. positional probability d. system e. surroundings f. universearrow_forwardOn the basis of your experience, predict which reactions are spontaneous: (a) PbO2(s)Pb(s)+O2(g)(b) N2(l)N2(g) at 25C (c) C6H12O6(s)C6H12O6(l) at 25C (d) Ca2+(aq)+CO32(aq)CaCO3(s)arrow_forwardChemists and engineers who design nuclear power plants have to worry about high-temperature reactions because it is possible for water to decompose. (a) Under what conditions does this reaction occur spontaneously? 2H2O(g) 2H2(g) + O2(g) (b) Under conditions where the decomposition of water is spontaneous, do nuclear engineers have to worry about an oxygen/hydrogen explosion? Justify your answer.arrow_forward
- The molecular scale pictures below show snapshots of a strong acid at three different instants after it is added to water. Place the three pictures in the correct order so that they show the progress of the spontaneous process that takes place as the acid dissolves in the water. Explain your answer in terms of entropyarrow_forwardFor the reaction NO(g)+NO2(g)N2O3(g) , use tabulated thermodynamic data to calculate H and S. Then use those values to answer the following questions. (a) Is this reaction spontaneous at 25°C? Explain your answer. (b) If the reaction is not spontaneous at 25°C, will it become spontaneous at higher temperatures or lower temperatures? (c) To show that your prediction is accurate, choose a temperature that corresponds to your prediction in part (b) and calculate G . (Assume that both enthalpy and entropy are independent of temperature.)arrow_forwardThermodynamics provides a way to interpret everyday occurrences. If you live in northern climates, one common experience is that during early winter, snow falls but then melts when it hits the ground. Both the formation and the melting happen spontaneously. How can thermodynamics explain both of these seemingly opposed events?arrow_forward
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