Practice ProblemATTEMPT
is
Want to see the full answer?
Check out a sample textbook solutionChapter 18 Solutions
Chemistry
- The Ksp for a very insoluble salt is 4.2 x 10-47 at 298 K. Whatis ΔG° for the dissolution of the salt in water?(a) -265 kJ/mol (b) -115 kJ/mol (c) -2.61 kJ/mol(d) +115 kJ/mol (e) +265 kJ/molarrow_forwardQUESTION 22 At what temperature, in Kelvin, does the following reaction change from spontaneous to non-spontaneous 2 A (aq) + 2 B (aq) 2 C (aq) + 1 D (aq) if AH° (A)= 0.8219 kJ/mol, AH° (B) = -40.5308 kJ/mol, AH° (C) = -85.3178 kJ/mol, and AH (D) = -70 8643 kJ/mol AS (A)= 76.117 J/(mol K), AS (B) = -15.8072 J/(mol K), AS (C) = 18.4425 J/(mol K), and AS" (D) = -8.6387 J/(mol K)arrow_forwardCalculate Kp for the following equation with a ΔGo for C2H4O = -13.1 kJ/mole at 25.0 oC. 2C2H4(g) + O2(g) →2C2H4O(g) Group of answer choices 2.68x10-29 5.17x10-15 2.48x1035 3.74x1028arrow_forward
- What happens to ΔG°298 (becomes more negative or more positive) for the following chemical reactions when the partial pressure of oxygen is increased?(a) S(s) + O2(g) ⟶ SO2(g)(b) 2SO2(g) + O2(g) ⟶ SO3(g)(c) HgO(s) ⟶ Hg(l) + O2(g)arrow_forwardThe ΔG°rxn for this reaction is -107.8 kJ/mol. Given the values for ΔGf°; what is the ΔGf° for A2B(l)? 2AC(g) + B2(g) → A2B(l) + BC2(g) Substance ΔGf° (kJ/mol) AC(g) -174.3 B2(g) 173.3 BC2(g) 169.9arrow_forwardCalculate ΔS° for the following changes. (Please show all work) SnCl4(l) ⟶ SnCl4(g) CS2(g) ⟶ CS2(l) Cu(s) ⟶ Cu(g) H2O(l) ⟶ H2O(g) 2H2(g) + O2(g) ⟶ 2H2O(l) 2HCl(g) + Pb(s) ⟶ PbCl2(s) + H2(g) Zn(s) + CuSO4(s) ⟶ Cu(s) + ZnSO4(s)arrow_forward
- 2) a)Determine AGX"° values for the following Combustion reactions at 25°C b) Decide whether this reaction is spontanious at 25°C or not CH:(g) + 02(g) CO:(g) + H;0 (1) AH (kJ/mol) s° (kJ/mol) CH4 -74.87 0.186 0.205 CO2 H,O -393.51 0.214 -285.83 0.070arrow_forwardCalculate the equilibrium constant at 25 °C for each of the following reactions from the value of ΔG° given.(a) I2(s) + Cl2(g) ⟶ 2ICl(g) ΔG° = −10.88 kJ(b) H2(g) + I2(s) ⟶ 2HI(g) ΔG° = 3.4 kJ(c) CS2(g) + 3Cl2(g) ⟶ CCl4(g) + S2 Cl2(g) ΔG° = −39 kJ(d) 2SO2(g) + O2(g) ⟶ 2SO3(g) ΔG° = −141.82 kJ(e) CS2(g) ⟶ CS2(l) ΔG° = −1.88 kJarrow_forwardGiven the following data, what is the value of ΔGf° (CH3OH(ℓ) at 25°C?CO(g) + 2 H2(g) ⇄ CH3OH(ℓ) K = 1.081 × 10-40ΔGf°(CO) = -137.2 kJ/molarrow_forward
- What is equal to zero at 298 K? A) ΔrH° (F, g) B) S° (F, g) C) S° (F2, g) ΔrH° (F2, g)arrow_forwardCalculate T (in K) given ΔG^0= -19.4 kJ/mol and ΔH^0= 69.9 kJ/mol and ΔS^0= 253 J/mol KΔG^0=ΔH^0−TΔS^0 A) 706 B) 1,760 C) 353 D) 0.353 E) 118arrow_forwardQuestion 14 Predict the sign (AS > 0 or AS < 0) of the entropy change (AS) for the following processes. (a) Ca2+ (aq) + S2 (aq) → Cas(s) (a) [Select] (b) KNO3(s) K+ (aq) + NO3(aq) (c) CO₂(s) CO₂(g) (d) CaCO3(s) CaO(s) + CO₂ (e) 3H2(g) + N₂(g) → 2NH3(g) (b) (c) (d) (e) [Select] [Select] [Select] [Select]arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY