3.18 Ten moles of H₂ and two moles of D₂ are mixed at 25 °Cand 1 bar. What is the value of AS°? Assume ideal gases.7. Problem 3.18 Modify the problem so that 2 moles of O₂ and 8 moles of N₂ are mixed. Otherdetails remain the same. Before you start, predict the sign of AmixS. For this problem, use thethermodynamic approach (eqn 3.43)−n₁ R ln y₁ − n₂R ln y₂Amix S=4x = -8.314 (2₁151 +86181)=41.603 5/1Гли8. Calculate AmixS again, for the mixing process described in problem 7. This time, use themolecular interpretation of the entropy (eqn 3.46). You can imagine two vessels connectedtogether with a valve. Initially, oxygen is on one side and nitrogen is on the other, both at 1 bar.Now open the valve and allow mixing; the pressure will still be 1 bar. Calculate AS for theoxygen, as its molecules now explore a volume that is 5 times larger. Calculate AS for thenitrogen, as its molecules now explore a volume that is 1.25 times larger. Add these two ASvalues together to get the total entropy change, which is AmixS. You should get the same answeras in problem 7.

The objective of the question is to calculate-The value of the standard entropy change.The value of…

3.18 Ten moles of H₂ and two moles of D₂ are mixed at 25 °C and 1 bar. What is the value of AS°? Assume ideal gases. 7. Problem 3.18 Modify the problem so that 2 moles of O2 and 8 moles of N₂ are mixed. Other details remain the same. Before you start, predict the sign of AmixS. For this problem, use the thermodynamic approach (eqn 3.43) Amix S -n₁R ln y₁ -n₂R ln y2

3.18 Ten moles of H₂ and two moles of D₂ are mixed at 25 °C and 1 bar. What is the value of AS°? Assume ideal gases. 7. Problem 3.18 Modify the problem so that 2 moles of O2 and 8 moles of N₂ are mixed. Other details remain the same. Before you start, predict the sign of AmixS. For this problem, use the thermodynamic approach (eqn 3.43) Amix S -n₁R ln y₁ -n₂R ln y2

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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3. Use the data oven i the table to calculate AHrxn, ASrxn, AGrxn, and Keq for the following reaction at 298 K. With showing all work. 2 HNO3(aq) + NO(g) →3 NO2(g) + H2O(1) K=? S° ΔΗ/ (kJ/mol) Compound (J /mol-K) 146 HNO3(aq) NO(g) NO2(g) H20(1) - 206.57 90.29 210.65 A. Calculate 4H°rxn: 33.2 239.9 -285.84 69.94 B. Calculate AS`rxn: C. Using the answers from a. And b. Calculate. AGʻrxn.:
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C(s) + 2H2(g) CH4(g) ΔH° = –75 kJ exo/endo - thermic Δν(gas) = __, (decrease)Vtot --> which way will equation shift? what will happen if there is an increase in: P(CH4) shift? __ ...two ways to to lose mass(C)? ___________ higher T shift? __
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-]
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Is the following chemical reaction spontaneous or non-spontaneous? 31 (aq) + H3ASO4(ag) + 2H* 3 (aq) + H3ASO3(aq) + H2O) (aq) Substance or ion AH°{(kJ/mole) S° (J/mole*K) -55.19 180.7 I (aq) H3ASO4(aq) -345.69 212.34 -11.23 11.09 H* (ag) 69.77 -89.6 13 (aq) H3ASO3(aq) -301.27 199.78 H20 (1) -285.8 69.95 the enthalpy must be calculated first both spontaneous and non-spontaneous
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 ? } ]
3. Calculate AS at 25°C and 1 atm pressure in J/(mol-K) for the following reaction CH4(8) + N₂(g) + 164 kJ → HCN(g) + NH3(8) AG° = 159 kJ. [a] 1x10² [b] 2 [c] 4x10² [d] 2x10¹ [e] 7x10¹