Interpretation:
The standard free energy change
Concept introduction:
Entropy is the measure of randomness in the system. Standard entropy change in a reaction is the difference in entropy of the products and reactants.
Where,
Standard entropy change in a reaction and entropy change in the system are same.
Enthalpy is the amount energy absorbed or released in a process.
The enthalpy change in a system
Where,
Free energy (Gibbs free energy) is the term that is used to explain the total energy content in a
Where,
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
CHEMISTRY: ATOMS FIRST VOL 1 W/CONNECT
- Consider 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_forwardCalculate H and G for the following reactions at 25C, using thermodynamic data from Appendix C; interpret the signs of H and G. a Al2O3(s)+2Fe(s)Fe2O3(s)+2Al(s) b COCl2(g)+H2O(l)CO2(g)+2HCl(g)arrow_forwardElemental boron, in the form of thin fibers, can be made by reducing a boron halide with H2. BCl3(g) + 3/2 H2(g) B(s) + 3HCl(g) Calculate H, S, and G at 25 C for this reaction. Is the reaction predicted to be product favored at equilibrium at 25 C? If so, is it enthalpy driven or entropy driven?arrow_forward
- Calculate H and G for the following reactions at 25C, using thermodynamic data from Appendix C; interpret the signs of H and G. a 2PbO(s)+N2(g)2Pb(s)+2NO(g)\ b CS2(l)+2H2O(l)CO2(g)+2H2S(g)arrow_forward(a) Is an endothermic reaction more likely to be sponta-neous at higher temperatures or lower temperatures? Explain. (b) The change depicted below occurs at constant pressure. Ex-plain your answers to each of the following: (1) What is the sign of ΔH? (2) What is the sign of ΔS? (3) What is the sign of ΔSₛᵤᵣᵣ?(4) How does the sign of ΔG vary with temperature?arrow_forward(a) If K << 1 for a reaction, what do you know about the sign and magnitude of ΔG°? (b) If ΔG ° << 0 for a reaction, what do you know about the magnitude of K? Of Q?arrow_forward
- (a) If K<<1 for a reaction, what do you know about the sign and magnitude of ΔG°? (b) If Δ G°>>0 for a reaction,what do you know about the magnitude of K? Of Q?arrow_forwardConsider the reaction shown in the diagram. What is the sign of Δ?ΔS for this reaction? Δ?>0ΔS>0 Δ?=0ΔS=0 Δ?<0arrow_forwardYou are working in a lab and observing a reaction. If a reaction vessel is cold to touch and the reaction will proceed by an increase in order in the reaction vessel, is the reaction spontaneous or nonspontaneous? Explain your answer what is the effect on delta H and delta S? Explain all three events.arrow_forward
- The Keq of a reaction is 4 x 10⁻⁷. At equilibrium, the... * reactants are favored reaction is spontaneous products are favored reaction is exothermicarrow_forwardPredict the sign of ΔG for the following reaction conditions without using specific numbers: What is the ∆G when the Δ H is negative and the ΔS positive ?arrow_forwardAnswer the questions on the following reaction at 575 degrees C. CaO(s) + 3 C(s) ----> CaC2(s) + CO(g) deltaH= 464.6 kJ/mol a. What is the standard reaction entropy? Would you expect CaO to have a higher standard entropy as a solid or dissolved in water? Is the reaction spontaneous?arrow_forward
- 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: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
- Chemistry & 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 LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax