Chemistry
13th Edition
ISBN: 9781259911156
Author: Raymond Chang Dr., Jason Overby Professor
Publisher: McGraw-Hill Education
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Chapter 17, Problem 17.115QP
Nicotine is the compound in tobacco responsible for addiction to smoking. While most of the nicotine in tobacco exists in the neutral form, roughly 90 percent of the nicotine in the bloodstream is protonated, as represented in the following chemical equation. Estimate ΔG° for the reaction.
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Chapter 17 Solutions
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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- a Calculate K1, at 25C for phosphoric acid: H3PO4(aq)H+(aq)+H2PO4(aq) b Which thermodynamic factor is the most significant in accounting for the fact that phosphoric acid is a weak acid? Why ?arrow_forwardAnother step in the metabolism of glucose, which occurs after the formation of glucose6-phosphate, is the conversion of fructose6-phosphate to fructose1,6-bisphosphate(bis meanstwo): Fructose6-phosphate(aq) + H2PO4(aq) fructose l,6-bisphosphate(aq) + H2O() + H+(aq) (a) This reaction has a Gibbs free energy change of +16.7 kJ/mol of fructose6-phosphate. Is it endergonic or exergonic? (b) Write the equation for the formation of 1 mol ADP fromATR for which rG = 30.5 kJ/mol. (c) Couple these two reactions to get an exergonic process;write its overall chemical equation, and calculate theGibbs free energy change.arrow_forwardWhat is a spontaneous reaction?arrow_forward
- Calculate G at 355 K for each of the reactions in Question 17. State whether the reactions are spontaneous.arrow_forwardDescribe a nonchemical system that is not in equilibrium, and explain why equilibrium has not been achieved.arrow_forwardThe 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_forward
- Adenosine triphosphate, ATP, is used as a free-energy source by biological cells. (See the essay on page 624.) ATP hydrolyzes in the presence of enzymes to give ADP: ATP(aq)+H2O(l)ADP(aq)+H2PO4(aq);G=30.5kJ/molat25C Consider a hypothetical biochemical reaction of molecule A to give molecule B: A(aq)B(aq);G=+15.0kJ/molat25C Calculate the ratio [B]/[A] at 25C at equilibrium. Now consider this reaction coupled to the reaction for the hydrolysis of ATP: A(aq)+ATP(aq)+H2O(l)B(aq)+ADP(aq)+H2PO4(aq) If a cell maintains a high ratio of ATP to ADP and H2PO4 by continuously making ATP, the conversion of A to B can be made highly spontaneous. A characteristic value of this ratio is [ATP][ADP][H2PO4]=500 Calculate the ratio [B][A] in this case and compare it with the uncoupled reaction. Compared with the uncoupled reaction, how much larger is this ratio when coupled to the hydrolysis of ATP?arrow_forwardCalculate K at 25°C for each of the reactions referred to in Question 32. Assume smallest whole-number coefficients.arrow_forwardConsider the reaction NH4+(aq) H+(aq)+NH3(aq) Use G f for NH3(aq) at 25C=26.7 kJ/mol and the appropriate tables to calculate (a) G at 25C (b) Ka at 25Carrow_forward
- Calculate E°, G°, and K at 25°C for the reaction 3Mn2+(aq)+2MnO4(aq)+2H2O5MnO2(s)+4H+(aq)arrow_forwardCalculate E°, G°, and K at 25°C for the reaction 3MnO4(aq)+4H+(aq)+Cl2(g)2Mn2+(aq)+2ClO3(aq)+2H2Oarrow_forwardConsider the equilibrium system HF(aq)H+(aq)+F(aq) Given HfHF(aq)=320.1kJ/mol , HfF(aq)=332.6kJ/mol ; SF(aq)=13.8kJ/molK ; KaHF=6.9104 at 25°C calculate S° for HF(aq).arrow_forward
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