CHEMISTRY: THE CENTRAL SCIENCE
14th Edition
ISBN: 9780134562230
Author: Brown
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 19.5, Problem 19.6.1PE
Which of these statements is true?
- All spontaneous reactions have a negative enthalpy change
- All spontaneous reactions have a positive enthalpy change
- All spontaneous reactions have a positive free-energy change
- All spontaneous reactions have a negetive free-energy change
- All spontaneous reactions have a negative entropy change
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following circumstances will result in a reaction that is spontaneous only at low temperatures?
positive enthalpy change and positive entropy change
negative enthalpy change and negative entropy change
positive enthalpy change and negative entropy change
negative enthalpy change and positive entropy change
1
Which of the following combinations will result in a reaction that is only spontaneous at low temperatures?
Negative enthalpy change and negative entropy change
Negative enthalpy change and positive entropy change
Positive enthalpy change and negative entropy change
Positive enthalpy change and positive entropy change
Chapter 19 Solutions
CHEMISTRY: THE CENTRAL SCIENCE
Ch. 19.1 - The process of iron being oxidized to make iron...Ch. 19.1 - At 1 atm pressure, CO2(s) sublimes at 78oC. Is...Ch. 19.2 - Prob. 19.2.1PECh. 19.2 - Prob. 19.2.2PECh. 19.3 - Prob. 19.3.1PECh. 19.3 - Prob. 19.3.2PECh. 19.3 - Prob. 19.4.1PECh. 19.3 - Prob. 19.4.2PECh. 19.4 - Prob. 19.5.1PECh. 19.4 - Using the standard molar entropies in Appendix C,...
Ch. 19.5 - Which of these statements is true? All spontaneous...Ch. 19.5 - Prob. 19.6.2PECh. 19.5 - Prob. 19.7.1PECh. 19.5 - Prob. 19.7.2PECh. 19.5 - Prob. 19.8.1PECh. 19.5 - Prob. 19.8.2PECh. 19.6 - What is the temperature above which the Haber...Ch. 19.6 - Prob. 19.9.2PECh. 19.7 - Prob. 19.10.1PECh. 19.7 - Prob. 19.10.2PECh. 19.7 - Prob. 19.11.1PECh. 19.7 - Prob. 19.11.2PECh. 19.7 - Prob. 19.12.1PECh. 19.7 - Prob. 19.12.2PECh. 19 - Prob. 1DECh. 19 - Prob. 1ECh. 19 - As shown here, one type of computer keyboard...Ch. 19 - 19.3
a. What are the signs of ΔS and ΔH for the...Ch. 19 - Predict the signs of H and S for this reaction....Ch. 19 - The accompanying diagram shows how entropy varies...Ch. 19 - Prob. 6ECh. 19 - The accompanying diagram shows how H (red line)...Ch. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - Prob. 10ECh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Can endothermic chemical reaction be spontaneous?...Ch. 19 - Prob. 15ECh. 19 - Prob. 16ECh. 19 - Prob. 17ECh. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - Prob. 22ECh. 19 - Prob. 23ECh. 19 - Prob. 24ECh. 19 - Prob. 25ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - Prob. 31ECh. 19 - Using the heat of vaporization in Appendix B,...Ch. 19 - Prob. 33ECh. 19 - Prob. 34ECh. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - Prob. 37ECh. 19 - Prob. 38ECh. 19 - For each of the following pairs, predict which...Ch. 19 - For each of the following pairs, predict which...Ch. 19 - Predict the sign of the entropy change of the...Ch. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - 19.44 Propanol (C3H7OH) melts at – 126.5 o C and...Ch. 19 - Prob. 45ECh. 19 - Prob. 46ECh. 19 - Prob. 47ECh. 19 - Prob. 48ECh. 19 - Prob. 49ECh. 19 - Prob. 50ECh. 19 - Using So values from Appendix C, calculate So...Ch. 19 - Calculate So values for the following reactions by...Ch. 19 - Prob. 53ECh. 19 - Prob. 54ECh. 19 - For a certain chemical reaction, Ho = -35.4 kJ and...Ch. 19 - A certain reaction has Ho = +23.7.kJ and So = +...Ch. 19 - Using data in Appendix C, calculate Ho, So, and Go...Ch. 19 - Prob. 58ECh. 19 - Prob. 59ECh. 19 - Prob. 60ECh. 19 - Prob. 61ECh. 19 - Prob. 62ECh. 19 - Prob. 63ECh. 19 - Prob. 64ECh. 19 - Prob. 65ECh. 19 - Prob. 66ECh. 19 - Prob. 67ECh. 19 - Prob. 68ECh. 19 - Prob. 69ECh. 19 - Prob. 70ECh. 19 - a. Use data in Appendix c to estimate the boiling...Ch. 19 - Prob. 72ECh. 19 - Prob. 73ECh. 19 - Prob. 74ECh. 19 - Prob. 75ECh. 19 - Prob. 76ECh. 19 - Prob. 77ECh. 19 - 19.78 Consider the reaction 3CH4(g) C3H8(g) ...Ch. 19 - Use data from Appendix C to calculate the...Ch. 19 - Prob. 80ECh. 19 - Prob. 81ECh. 19 - Prob. 82ECh. 19 - Prob. 83ECh. 19 - Prob. 84ECh. 19 - Prob. 85AECh. 19 - Prob. 86AECh. 19 - Prob. 87AECh. 19 - Prob. 88AECh. 19 - Prob. 89AECh. 19 - Prob. 90AECh. 19 - Prob. 91AECh. 19 - Prob. 92AECh. 19 - Prob. 93AECh. 19 - Prob. 94AECh. 19 - Prob. 95AECh. 19 - Prob. 96AECh. 19 - Prob. 97AECh. 19 - Prob. 98AECh. 19 - Prob. 99AECh. 19 - Prob. 100AECh. 19 - Prob. 101AECh. 19 - Prob. 102AECh. 19 - Most liquids follow Trouton’s rule (see Exercise...Ch. 19 - In chemical kinetics, the entropy of activation is...Ch. 19 - Prob. 105IECh. 19 - Prob. 106IECh. 19 - Prob. 107IECh. 19 - Prob. 108IECh. 19 - The following data compare the standard enthalpies...Ch. 19 - Prob. 110IECh. 19 - Prob. 111IECh. 19 - Prob. 112IE
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- The standard free energy variation, at 25 ºC, for equilibrium: Glucose-6-phosphate (G-6-P) Glucose-1-phosphate (G-1-P) is ΔGº '= + 7280 J / mol. Calculate a) The equilibrium constant of the reaction. b) The real change in free energy when one mole of G-6-P is transformed into G-1-P, both concentrations remaining constant and equal to 10mM and 2 mM respectively.arrow_forwardStudy the reactions for the formation of compounds from their elements. 1. C (s) + 02 (g) → CO2 (g) AH=-394 kJ 2. H2 (9) + 02 (g) → H20 (1) 3. 20 (s) + 3H2 (g) → C2H6 (g) ΔΗ-242 kJ ΔΗ--84 kJ The combustion of C2H6 is shown by the following equation: C2H6 (g) + 02 (9) → 2CO2 (9) + 3H2O (1) AH. = ? -286 kJ -1,430 kJ 286 kJ 1,430 kJarrow_forwardConsider a general reaction with the following free energy: Products, AGⓇ' = 5.3 kJ/mol Select all of following that are TRUE about this reaction. Reactants This reaction never occurs. At equilibrium, the reactants are favored. This reaction always occurs. The reactions goes in the forward direction The reaction is non-spontaneous At equilibrium, the products are favored. The reaction is spontaneous The reaction goes in the reverse directionarrow_forward
- 5. The change in enthalpy for a certain reaction is a small, positive number. The change in entropy for this reaction is an extremely large positive number. Is this reaction exergonic or endergonic?exergonic endogonicarrow_forwardIndicate which of the four cases below applies to the following four reactions (a through d) by writing 1, 2, 3, or 4 after each letter Spontaneous at all temperatures. Spontaneous above a certain temperature. Spontaneous below a certain temperature. Non-spontaneous at all temperatures. a) PCl3(g) + Cl2(g) ↔ PCl2(g) ΔH° = -87 KJ b) CH4(g) + 2 O2(g) ↔ CO2(g) + 2 H2O(g) ΔH° = +41 KJ c) 2 NH3(g) → N2(g) + 3 H2(g) ΔH° = +160 KJ d) Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) ΔH° = -462 KJ please write which number they classify asarrow_forwardWhat is AS for the combustion of propane? C3H8(g) +502(g) → 3CO2(g) + 4H₂O(g) Substance C3H8(g) O2(g) CO2(g) H₂O(g) S(J/K mol) 269.9 205.0 213.6 188.7arrow_forward
- Which of the following is a property of exergonic reactions? The products of exergonic reactions have more stored energy than the reactants. The products of exergonic reactions have more stored energy than the reactants. Exergonic reactions release free energy Exergonic reactions release free energy Exergonic reactions are also referred to as non-spontaneous reactions Exergonic reactions are also referred to as non-spontaneous reactionsarrow_forwardConsider the reaction: CaCO3(s) ↔ CaO(s) + CO2(g) The reaction enthalpy and entropy are: ΔHo rx = -117.1 kJ∙mol-1; ΔSo rx = -362 J∙K-1mol-1. Assume that these values are independent of temperature. If this reaction is in equilibrium and the temperature is increased, what do you expect will happen? Write one of the following: net reaction to right, net reaction to left, no net reaction and explain your reasoning. Do not use Le Chatelier’s Principlearrow_forwardUse the following reactions to answer the next two questions. 4PbO (s) → 4Pb (s) + 2O2 (g) ∆H° = 876 kJ C (s) + O2 (g) → CO2 (g) ∆H° = -394 kJ 3PbCO3 (s) → 3PbO (s) + 3CO2 (g) ∆H° = 258 kJ A) Calculate ∆H° for the reaction: 2PbCO3 (s) → 2Pb (s) + 2C (s) + 3O2 (g) B)Calculate the enthalpy change, ∆H° (in kJ) that is involved in the production of 2.50 gram of solid carbonarrow_forward
- Classify each of the statements as true or false. True False A reaction will have an equilibrium constant that is greater than one if The entropy of a substance increases when a solid melts into a liquid at AG° for the reaction is negative. any temperature. For an endothermic reaction, an increase in temperature results in an An endothermic reaction is never spontaneous. increase in the equilibrium constant. Product formation is always favored in a reaction with a positive AH° Entropy increases as the temperature decreases. and a negative ASº.arrow_forwardThermodynamics Basics According to thermodynamics, which of the following type of chemical reactions releases energy when advancing towards product formation? spontaneous reactions non-spontaneous reactions reactions associated with a positive change in free enthalpy reactions associated with a negative change in entropyarrow_forwardCan someone draw an energy Diagram with the following: The reaction is not spontaneous, the first step is exergonic and slow, the reaction has a total of three steps, the second step is a slow equilibrium, and the third step is faster than the first And how would I go about taking this information and drawing a energy diagram? arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry for Today: General, Organic, and Bioche...
Chemistry
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY