Chemistry: Structures and Properties, Books a la Carte Plus MasteringChemistry with eText -- Access Card Package
1st Edition
ISBN: 9780321974617
Author: Nivaldo J. Tro
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 19, Problem 76E
Interpretation Introduction
Interpretation:
To find ∆H for the reaction with the equilibrium constant 0.65 at 755 K.
Concept introduction:
► The equilibrium constant is defined as a ratio of the concentration of the products to the concentration of the reactants. If the K value is less than one the reaction will move to the left and if the K value is greater than one the reaction will move to the right.
► Enthalpy change is the name given to the amount of heat evolved or absorbed in a reaction carried out at constant pressure. It is given the symbol ΔH, read as "∆H". The term "enthalpy change" only applies to reactions done at constant pressure.
To determine:
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionChapter 19 Solutions
Chemistry: Structures and Properties, Books a la Carte Plus MasteringChemistry with eText -- Access Card Package
Ch. 19 - Which reaction Is most likely to have a positive...Ch. 19 - Prob. 2SAQCh. 19 - Arrange the gases—F2, Ar, and CH3F—in order of...Ch. 19 - Prob. 4SAQCh. 19 - Prob. 5SAQCh. 19 - For a certain reaction Hrxn=255kJ and Srxn=211J/K...Ch. 19 - Prob. 7SAQCh. 19 - s8. Use standard free energies of formation to...Ch. 19 - Prob. 9SAQCh. 19 - For the following reaction, Grxn=9.4kJ at 25 °C....
Ch. 19 - Prob. 11SAQCh. 19 - Prob. 12SAQCh. 19 - Prob. 13SAQCh. 19 - Prob. 14SAQCh. 19 - Prob. 15SAQCh. 19 - Prob. 1ECh. 19 - What is a spontaneous process? Provide an example.Ch. 19 - Prob. 3ECh. 19 - Explain the difference between the spontaneity of...Ch. 19 - What is the precise definition of entropy? What is...Ch. 19 - Why does the entropy of a gas increase when it...Ch. 19 - Explain the difference between macrostates and...Ch. 19 - Based on its fundamental definition, explain why...Ch. 19 - State the second law of thermodynamics. How does...Ch. 19 - What happens to the entropy of a sample of matter...Ch. 19 - State the third law of thermodynamics and explain...Ch. 19 - Why is the standard entropy of a substance in the...Ch. 19 - How does the standard entropy of a substance...Ch. 19 - How can you calculate the standard entropy change...Ch. 19 - Explain why water spontaneously freezes to form...Ch. 19 - Why do exothermic processes tend to be spontaneous...Ch. 19 - What is the significance of the change in Gibbs...Ch. 19 - Prob. 18ECh. 19 - Describe the three different methods to calculate...Ch. 19 - Why is free energy “free”?Ch. 19 - Explain the difference between G and G .Ch. 19 - Why does water spilled on the floor evaporate even...Ch. 19 - How do you calculate the change ¡n free energy for...Ch. 19 - How does the value of G for a reaction relate to...Ch. 19 - Prob. 25ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Without doing any calculations, determine the sign...Ch. 19 - Prob. 30ECh. 19 - How does the molar entropy of a substance change...Ch. 19 - What is the molar entropy of a pure crystal at 0...Ch. 19 - For each pair of substances, choose the one that...Ch. 19 - For each pair of substances, choose the one that...Ch. 19 - Rank each set of substances in order of increasing...Ch. 19 - Prob. 36ECh. 19 - Use data from Appendix IIB to calculate Srxn for...Ch. 19 - Use data from Appendix IIB to calculate Srxn for...Ch. 19 - Find S for the formation of CH2Cl2(g) from its...Ch. 19 - Prob. 40ECh. 19 - Without doing any calculations, determine the sign...Ch. 19 - Prob. 42ECh. 19 - Calculate Ssurr at the indicated temperature for...Ch. 19 - Prob. 44ECh. 19 - Given the values of Hrxn , Srxn and T, determine...Ch. 19 - Prob. 46ECh. 19 - Prob. 47ECh. 19 - Prob. 48ECh. 19 - Calculate the free energy change for the reaction...Ch. 19 - Prob. 50ECh. 19 - Prob. 51ECh. 19 - Predict the conditions (high temperature, low...Ch. 19 - Methanol burns in oxygen to form carbon dioxide...Ch. 19 - In photosynthesis, plants form glucose (C6H12O6)...Ch. 19 - For each reaction, calculate Hrxn , Srxn and Grxn...Ch. 19 - For each reaction calculate Hrxn , Srxn and Grxn...Ch. 19 - Use standard free energies of formation to...Ch. 19 - Use standard free energies of formation to...Ch. 19 - Consider the reaction: 2NO(g)+O2(g)2NO2(g)...Ch. 19 - Prob. 60ECh. 19 - Determine G for the reaction:...Ch. 19 - Prob. 62ECh. 19 - Consider the sublimation of iodine at 25.0°C:...Ch. 19 - Consider the evaporation of methanol at 25.0°C....Ch. 19 - Consider the reaction: CH3OH(g)CO(g)+2H2(g)...Ch. 19 - Consider the reaction: CO2(g)+CCl4(g)2COCl2(g)...Ch. 19 - Use data from Appendix IIB to calculate the...Ch. 19 - Prob. 68ECh. 19 - Prob. 69ECh. 19 - Prob. 70ECh. 19 - Prob. 71ECh. 19 - Prob. 72ECh. 19 - Consider the reaction: H2(g)+I2(g)2HI(g) The...Ch. 19 - Consider the reaction: 2N0(g) — O(g) 2N02(g) The...Ch. 19 - The change in enthalpy (Hrxn) for a reaction is...Ch. 19 - Prob. 76ECh. 19 - Prob. 77ECh. 19 - Prob. 78ECh. 19 - Our atmosphere is composed primarily of nitrogen...Ch. 19 - Prob. 80ECh. 19 - Ethene (C2H4) can be halogenated by the reaction:...Ch. 19 - H2 reacts with the halogens (X2) according to the...Ch. 19 - Consider this reaction occurring at 298 K:...Ch. 19 - Consider this reaction occurring at 298 K:...Ch. 19 - Prob. 85ECh. 19 - Prob. 86ECh. 19 - These reactions are important in catalytic...Ch. 19 - Prob. 88ECh. 19 - All the oxides of nitrogen have positive values of...Ch. 19 - Prob. 90ECh. 19 - Consider the reaction X2(g)2X(g) . When a vessel...Ch. 19 - Prob. 92ECh. 19 - Indicate and explain the sign of Suniv for each...Ch. 19 - The Haber process is very important for...Ch. 19 - A metal salt with the formula MCl2 crystallizes...Ch. 19 - The solubility of AgCI(s) in water at 25°C is...Ch. 19 - Review the subsection in this chapter entitled...Ch. 19 - Calculate the entropy of each state and rank the...Ch. 19 - Suppose we redefine the standard state as P=2atm ....Ch. 19 - The G for the freezing of H2O(l) at 10°C is 210...Ch. 19 - Consider the reaction that occurs during the Haber...Ch. 19 - The salt ammonium nitrate can follow three modes...Ch. 19 - Given the tabulated data, calculate Svap for each...Ch. 19 - Prob. 104ECh. 19 - Prob. 105ECh. 19 - Consider the changes in the distribution of nine...Ch. 19 - Prob. 107ECh. 19 - Prob. 108ECh. 19 - Prob. 109ECh. 19 - The reaction A(g)B(g) has an equilibrium constant...
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
- Use the data in Appendix J to calculate rG andKPat 25 C for the reaction 2HBr(g)+Cl2(g)2HCl(g)+Br2() Comment on the connection between the sign of rG and the magnitude ofKP.arrow_forwardPredict whether each of the following processes results in an increase in entropy in the system. (Define reactants and products as the system.) (a) Water vapor condenses to liquid water at 90 C and 1 atm pressure. (b) The exothermic reaction of Na(s) and Cl2(g) forms NaCl(s). (c) The endothermic reaction of H2 and I2 produces an equilibrium mixture of H2(g), I2(g), and HI(g). (d) Solid NaCl dissolves in water forming a saturated solution.arrow_forwardSilver carbonate, Ag2CO3, is a light yellow compound that decomposes when heated to give silver oxide and carbon dioxide: Ag2CO3(s)Ag2O(s)+CO2(g) A researcher measured the partial pressure of carbon dioxide over a sample of silver carbonate at 220C and found that it was 1.37 atm. Calculate the partial pressure of carbon dioxide at 25C. The standard enthalpies of formation of silver carbonate and silver oxide at 25C are 505.9 kJ/mol and 31.05 kJ/mol, respectively. Make any reasonable assumptions in your calculations. State the assumptions that you make, and note why you think they are reasonable.arrow_forward
- Consider the reaction CO(g)+H2O(g)CO2(g)+H2(g) Use the appropriate tables to calculate (a) G at 552C (b) K at 552Carrow_forwardExplain how the entropy of the universe increases when an aluminum metal can is made from aluminum ore. Thefirst step is to extract the ore, which is primarily a formof A12O3, from the ground. After it is purified by freeingit from oxides of silicon and iron, aluminum oxide ischanged to the metal by an input of electrical energy. 2Al2O3(s)electricalenergy4Al(s)+3O2(g)arrow_forwardThe equilibrium constant for a certain reaction increases by a factor of 6.67 when the temperature is increased from 300.0 K to 350.0 K. Calculate the standard change in enthalpy (H) for this reaction (assuming H is temperature-independent).arrow_forward
- Hydrogen gas and iodine gas react to form hydrogen iodide. If 0.500 mol H2 and 1.00 mol I2 are placed in a closed 10.0-L vessel, what is the mole fraction of HI in the mixture when equilibrium is reached at 205C? Use data from Appendix C and any reasonable approximations to obtain K.arrow_forwardFor each process, predict whether entropy increases or decreases, and explain how you arrived at your prediction. 2 CO2(g) → 2 CO(g) + O2(g) NaCl(s) → NaCl(aq) MgCO3(s) → MgO(s) + CO2(g)arrow_forwardWhat determines Ssurr for a process? To calculate Ssurr at constant pressure and temperature, we use the following equation: Ssurr = H/T. Why does a minus sign appear in the equation, and why is Ssurr inversely proportional to temperature?arrow_forward
- Heating some metal carbonates, among them magnesium carbonate, leads to their decomposition. MgCO3(s) MgO(s) + CO2(g) (a) Calculate rG and rS for the reaction. (b) Is the reaction product-favored at equilibrium at 298 K? (c) Is the reaction predicted to be product-favored at equilibrium at higher temperatures?arrow_forwardElemental boron, in the form of thin fibers, can be made by reducing a boron halide with H2. BCl3(g) + 32 H2(g) B(s) + 3 HCl(g) Calculate rH, rS, and rG at 25 C for this reaction. Is the reaction predicted to be product-favored at equilibrium at 25 C? If so, is it enthalpy- or entropy-driven? [S for B(s) is 5.86 J/K mol.]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
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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