31. Given the following reaction determine Free Energy change and E°call for the following reaction at standard conditions? Is this reaction spontaneous? Mn? leg) + Ks) = MnO2 (5) +K *teg) (acidic) a. -800 kJ/non spontaneous c. 800 kJ/non spontaneous e. -400 kJ/non spontaneous g. 400 kJ/non spontaneous b. -800 kJ/spontaneous d. 800 kJ/spontaneous f. -400 kJ/spontaneous h. 400 kJ/spontaneous

31. Given the following reaction determine Free Energy change and E°call for the following reaction at standard conditions? Is this reaction spontaneous? Mn? leg) + Ks) = MnO2 (5) +K *teg) (acidic) a. -800 kJ/non spontaneous c. 800 kJ/non spontaneous e. -400 kJ/non spontaneous g. 400 kJ/non spontaneous b. -800 kJ/spontaneous d. 800 kJ/spontaneous f. -400 kJ/spontaneous h. 400 kJ/spontaneous

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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What is the free energy change for the following reaction at 25 oC if the entropy change at this temperature is - 10 J/molK? 3 A (g) + B (s) ------ 2 C (g) + 3.40 kJ A. - 3.30 kJ/mol B. + 6.38 kJ/mol C. + 0.420 kJ/mol D. - 6.38 kJ/mol E. - 0.420 kJ/mol
Which of the following combinations of values for AH and AS for a given process, indicate that the process is spontaneous at all temperatures? A. O Both AH and AS are positive. B. O Both AH and AS are negative. C. O AH is positive and AS is negative. D. O AH is negative and AS is positive.
For the reaction: 20PCI3(g) 2PCI3(1) + 02(g) AH° = 508 kJ-mol-1 and AS° = 178 J-mol-1.K-1 at 298 K. Which of the following statements is true? Periodic Table and Datasheet O The reaction is spontaneous at all temperatures. O The reaction is spontaneous at high temperatures. O The reaction is spontaneous at low temperatures. O The reaction is not spontaneous at any temperature.
2. Consider the reaction below. 4NH3(g) + 5O₂ (g) 4NO (g) + 6H₂O (g) a. Using the provided AGf values, calculate AG° for the above reaction at 25 °C. Species AG (kJ/mol) NH3) NO(g) H₂O -16.5 87.6 -228.6 b. Is the reaction spontaneous at 25 °C? c. What is the sign of the change in entropy for the reaction?
2
An spontaneous process ALWAYS has a negative AG has a negative AH has a positiveAH has a positive AG
For the decomposition of hydrogen peroxide to water and oxygen, H2O2(g) ⟶⟶ H2O(g) + O2(g) ΔΔH° = -106 kJ, and ΔΔS° = +0.0580 kJ/K. In what temperature range is the reaction spontaneous (ΔΔG° < 0)? A. The temperature must be greater than 1.83××103 K B. The temperature must be less than 1.83 ××103 K. C. The temperature must be between 225 K and 1.83 ××103 K. D. ΔΔG° is always less than zero. E. ΔΔG° is never less than zero. Group of answer choices
Part b-- Standard entropy = 205 J/mol K
11. Calculate the ASsys, ASsurr, and AS,univ of the process below at 25°C and determine whether it is spontaneous, at equilibrium, or nonspontaneous. Removal of Ozone in the Stratosphere 2 03 (g) -> 3 02 (g) Оз (д) 02 (g) Substance Entropy 238.9 J/mol-K 205.2 J/ mol-K Enthalpy 142.7 kJ/mol
A cvg.cengagenow.com Flipgrid | 50ffc. GRLContent Netflix Favorites My Home 3-Day General.. Netflix Content [Review Topics] [References] 2req Use the References to access important values if needed for this question. 2req The free energy change for the following reaction at 25 °C, when [H*] = 7.21×10³ M and [Hg²*]=1.17 M, is 178 kJ: 2req 2H*(7.21×10-3 M) + Hg(1)→ H,(g) + Hg²*(1.17 M) AG= 178 kJ What is the cell potential for the reaction as written under these conditions? s 2req Answer: V ts 2req Would this reaction be spontaneous in the forward or the reverse direction? ots OM) pts 2reg Submit Answer Retry Entire Group 9 more group attempts remaining pts M) pts
39. provide the answer ASap
Chemistry Use the observations about each chemical reaction in the table below to AS. decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations cenclusions AH is ick one This reaction is spontaneous only below -22. C. AS is eive AN is The reverse of this reaction is always spontaneous AS is pick one 8 AH is cene This reaction is exothermic AS is AS. Note: if you have not been given enough information to decide a sign, select the "unknown" o conclusions observations reaction ΔΗ is v (pick one) This reaction is spontaneous only below positive -22. °C. AS is negative unknown ΔΗ is (pick one) e The reverse of this reaction is always spontaneous. AS is (pick one) 6 ΔΗ is (pick one) e This reaction is exothermic. AS is (pick one) e reaction observations conclusions This reaction is spontaneous only below ΔΗ is (pick one) e A. - 22. °C. AS is…