he liea al vaporizalian ol carban disulide, CSz, al 25C is 27.2 kml. Wia is the entropy change when 3.80 mol a vaper in eqilikrium with hqud contenses lo lquit al 25" The enlropy of this vapor at 25"C is 243 J(mol KJ. Entrogy change - Vhat is the eutropy of the liquid at this temperature? Euntropy - JK

he liea al vaporizalian ol carban disulide, CSz, al 25C is 27.2 kml. Wia is the entropy change when 3.80 mol a vaper in eqilikrium with hqud contenses lo lquit al 25" The enlropy of this vapor at 25"C is 243 J(mol KJ. Entrogy change - Vhat is the eutropy of the liquid at this temperature? Euntropy - JK

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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Question 4 Which conclusion is inconsistent with the graph below? AGⓇ of T(K) O entropy change becomes more positive, as temperature increases O reaction is favorable at high temperatures O heat flows from the surroundings into the system O entropy of the system increases Question 5. Based on the thermodynamic data provided, what is the normal boiling point of H₂O₂? X (1) X (s) Use the following thermodynamic inform Substance) X (1) AH, (kJ/mol): -187.7 AG, (kJ/mol): -120.4 SºU/K-mol): 109.6 X (g) -136.3 -105.6 232.7
The vapor pressure of water at 25oC is 0.0313 atm. Calculate the value of Kc at 25oC for the following reaction. H2O(l) ⇆ H2O(g) Your answer should have 3 sig figs.
3..HClO3 + CaCO3 Is this reaction spontaneous? Why or why not?
1. Ammonia can be made from the reaction of nitrogen and hydrogen: N2 (g) + 3 H2 (g) ⟺ 2 NH3 (g) For this reaction, K = 1.6 x 102 and ΔH = -91.8 kcal/mole at 25oC. Is the reaction endothermic or exothermic? Briefly explain. Is there in increase in entropy, a decrease in entropy, or no change in entropy? Briefly explain. At 25oC, is this reaction product favored or reactant favored? Briefly explain. Do you expect this reaction to be spontaneous at all temperatures? Briefly explain.
Calcualte the change in Gibbs free energy (AG°) for the reaction below given the change in enthalpy (AH°) is CO (g) + H,O (g) – CO2 (g) + H2 (B) DH° = -41.2 kJ and Ds° = -135 J/mol K at 298 K -0.97 kļ/mol a 40188.8 kļ/mol -81.43 kJ/mol -0.77 kļ/mol
6
The accompanying diagram shows how entropy varieswith temperature for a substance that is a gas at thehighest temperature shown. (a) What processes correspondto the entropy increases along the vertical lineslabeled 1 and 2? (b) Why is the entropy change for 2larger than that for 1? (c) If this substance is a perfectcrystal at T = 0 K, what is the value of S at this temperature?
Question 1
For each of the following reactions, decide whether entropy is increasing (+AS) or decreasing (-AS). (a) 2CH4(g) + 2CO2(g) C2H4(g) + 2H,0(g) + 2CO (g) (b) CO2(g) + 3H2(g) CH;OH(g) + H,O(g) (c) CH;OCH;(g) + H20(g) 2CO(g) + 4H2(g)
4,2) consider the production of ammonia
Calculate AS° (J/mol K) for the reaction H2(g) + Cl2(g) → 2HCI(g) at 650 K. T - 1.0835×10* K C; (H,.g)= 22.66 + 4.38×10? - JK'mol" K? T -1.2517×10- K C (Cl,.g) = 22.85 + 6.543×10. KJK'mol C; (HCl, g) = 29.81– 4.12×10³- + 6.2231×10 JK'mol" T -JK'mol' K K?