Part A Standard enthalpies for selected substances at 25°C Substance S° (J/(mol - K))" Calculate AS for the balanced chemical equation O2(g) 205.2 2H2S(g) + 302(g) → 2H2O(g) + 2SO2(g) SO2(g) 248.2 Express the entropy change to four significant figures and include the appropriate units. SO3(g). 256.8 H2O(g) 188.8 ? H2S(g) 205.8 ASm = Value Units You may want to reference (Pages 815 - 819) Section 18.7 while completing this problem.

Part A Standard enthalpies for selected substances at 25°C Substance S° (J/(mol - K))" Calculate AS for the balanced chemical equation O2(g) 205.2 2H2S(g) + 302(g) → 2H2O(g) + 2SO2(g) SO2(g) 248.2 Express the entropy change to four significant figures and include the appropriate units. SO3(g). 256.8 H2O(g) 188.8 ? H2S(g) 205.8 ASm = Value Units You may want to reference (Pages 815 - 819) Section 18.7 while completing this problem.

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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Consider the reaction: Fe₂O3 (8) + 3H2(g) →2Fe(s) + 3H₂O(g) Using standard thermodynamic data at 298 K, calculate the entropy change for the surroundings when 2.31 moles of Fe₂O3 (8) react at standard condit AS Substance AH (kJ/mol) Fe₂O3 (8) H₂ (9) Fe(s) H₂O(g) surroundings -824.2 0.0 0.0 -241.8 J/K
If the temperature of the surroundings is 146.55 °C, calculate the entropy change (in J/K) for the system (AS sys), surroundings (AS sur) and universe (AS universe) when 18.2 g of gaseous phenol (C6H6O) condenses. Report your answers to two decimal places. Tfus(°C) 40.90 Tvap (°C) 181.87 AH°fus (kJ/mol) 11.29 AHvap (kJ/mol) 45.69 1. AS sys Submit Answer 2. AS sur Submit Answer 3. AS universe Submit Answer Tries 0/5 Tries 0/5 Tries 0/5
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Consider the following reaction: 2 H2(g) + 2 NO(g) N2(g) + 2 H20(g) and the following table of standard enthalpies of formation and standard absolute entropies: compound AH (kJ mol-1) s° (J K-1 mol-1) H2(g) 130.8 NO(g) 91.3 210.8 N2(g) 191.6 H20(g) -241.8 188.8
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M Preq 3 Consider the reaction 00 E D 4HCI(g) + O₂(g) 2H₂O(g) + 2Cl₂(8) for which AH° = -114.4 kJ and AS° = -128.9 J/K at 298.15 K. J/K (1) Calculate the entropy change of the UNIVERSE when 1.775 moles of HCI(g) react under standard conditions at 298.15 K. ASuniverse (2) Is this reaction reactant or product favored under standard conditions? Submit Answer (3) If the reaction is product favored, is it enthalpy favored, entropy favored, or favored by both enthalpy and entropy? If the reaction is reactant favored choose 'reactant favored'. 4 000 000 R F DO LO V % 5 [Review Topics] [References] Use the References to access important values if needed for this question. T Retry Entire Group 8 more group attempts remaining Cengage Learning Cengage Technical Support G 6 B Y H & 7 N U 1 * 8 J M 9 K बैं O < L P Previous Email Instructor Save and Exit { + 11 Next ? } ]
llus_engine.html?ClassID=1653724337# Calculate the change in entropy for the reaction. H2(g) + l2(g) = 2HI(g) Substance S° (J/mol·K) H,(g) 1,(8) HI(g) 130.58 116.73 206.30 AS° = [ ? ] J/mol - K Enter either a + or - sign AND the magnitude in your answer. Enter