If AH-2040 kJ-mol-1 and ASn +103 J.k-1.mol-1 for the reaction, C₂Hs (g) +502(g) →3CO₂(g) + 4H₂O(g) Calculate the change in entropy of the surroundings (AS sum) at 298 K (assume constant pressure and temperature). -6.85 J-K-1-mol-1 +6.85 J-K-1.mol-1 +103 J-K-¹-mol-1 -6850 J-K-¹-mol-1 O +6850 J-K-1-mol-1

If AH-2040 kJ-mol-1 and ASn +103 J.k-1.mol-1 for the reaction, C₂Hs (g) +502(g) →3CO₂(g) + 4H₂O(g) Calculate the change in entropy of the surroundings (AS sum) at 298 K (assume constant pressure and temperature). -6.85 J-K-1-mol-1 +6.85 J-K-1.mol-1 +103 J-K-¹-mol-1 -6850 J-K-¹-mol-1 O +6850 J-K-1-mol-1

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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4) The heat capacity of CO2(g) between 30 C and 100 C is given by the following equation Cp = 26.65+ 42.3x10-3 T/K-142.4X10 -7 T 2/K 2 in J K -1 mol -1 . a )Calculate the enthalpy change and b) the entropy change between 30C and 100 C.
6.
Consider the following reaction: 2 H,S(g) + 30,(g) –- 2 H,O(g) + 2 SO,(g) and the following table of standard enthalpies of formation and standard absolute entropies: compound AH (kJ mol") s° (JK' mol") H,S(g) -20.6 205.8 02(g) 205.2 H2O(g) |-241.8 188.8 So,(9) |-296.8 248.2
Gaseous SO2Cl2 reacts with liquid water to form hydrogen chloride gas and liquid sulfuric acid. Using data tabulated in Appendix G of your text, calculate the enthalpy change, in units of kJ/mol, for the formation of 2 mol of liquid sulfuric acid.
us engine.html?ClassID=1246112631# nt Orie... Using the data below, calculate the entropy for the formation of rust, iron(II) oxide from Fe and H2O. 2Fe(s) + 3H20(g) → Fe,O3(s) + 3H2(g) Compound S (J/mol K) AH', (kJ/mol) Fe(s) H,O(g) Fe,0,(s) H,(g) f 15 21 189 -242 87 -824 131 ASxn = [ ? ] J/K Enter either a + or - sign AND the magnitude. Entropy (J/k) Enter
# Consider the reaction 20 E D 2NH3(g) + 3N₂O(g) → 4N2(g) + 3H₂O(g) for which AH = -879.5 kJ and AS = 288.1 J/K at 298.15 K. 1. Calculate the entropy change of the UNIVERSE when 1.642 moles of NH3 (9) react under standard conditions at 298.15 K. $ Submit Answer 4 ASuniverse J/K 2. Is this reaction reactant or product favored under standard conditions? 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'. 000 000 R F do L % [Review Topics] [References] Use the References to access important values if needed for this question. 5 O Retry Entire Group T Cengage Learning Cengage Technical Support G ‹ 6 8 more group attempts remaining Y H & 7 U 8 J 1 ( 9 K O O L P > Previous Email Instructor Save and Exit + 11 ( Next ? 11 } ] d
Mark the correct statements. (Select all that apply.) O [The reaction 2H20(g) → 2H2(g) + O2(g) is expected to have a positive value of ASº.] O [If a sample of pure ozone changed to oxygen at constant T and P, the entropy of the sample would decrease.] O [For the process H20(1) → H20(s) occurring at 0°C and 1 atm, the sign of AS is negative.] O [The value of AS for the process CHC13(1) – CHC13(g) is negative.] O [The reaction CH4(g) + 202(g) → CO2(g) + 2H2O(g) has a negative value of ASsurr-]
Consider the reaction: 6CO2(g) + 6H₂O(l) → C6H12O6 + 602 (9) Using standard thermodynamic data at 298 K, calculate the entropy change for the surroundings when 1.87 moles of CO₂ (g) react at standard conditions. AS⁰ Substance AH (kJ/mol) CO₂ (g) -393.5 H₂O(1) -285.8 C6H12O6 -1275.0 O₂(g) 0.0 surroundings J/K
A chem.. ngineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 52.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. AH = 181. kJ J AS = 557. K N, (g) + 0, (g) → 2NO (g) AG = N, (g) + 0,(8) kJ Which is spontaneous? this reaction the reverse reaction neither ΔΗ - - 1353. kJ J AS = K 2CH,OH (g) + 30,(g)…
For the reaction NH4NO3(aq) 1 N₂O(g) + 2 H₂0 (1) AG° -179.4 kJ and AH = -149.6 kJ at 298 K and 1 atm. This reaction is (reactant, product) favored under standard conditions at 298 K. The entropy change for the reaction of 1.51 moles of NH4NO3(aq) at this temperature would be J/K.
6. A 10 kg copper block has an initial temperature of 800 K. It is placed in a well-insulated vessel containing 100 kg of water initially at 290 K. The process is isobaric at atmospheric pressure. Assume copper and liquid water have constant heat capacity of Cp = 4184 J/kg K for water and 398 J/kg-K for copper. What is the change in entropy of the universe resulting from the process? [CO3]
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 ? } ]