10) Consider the following reaction HCN (g) +2 H: (g) → CH:NH: (g) AH°= -158.0 kJ; AS°= -219.9 J/K a) Calculate the Gibbs Free Energy of reaction at 25°C b) Calculate the equilibrium constant for this reaction

10) Consider the following reaction HCN (g) +2 H: (g) → CH:NH: (g) AH°= -158.0 kJ; AS°= -219.9 J/K a) Calculate the Gibbs Free Energy of reaction at 25°C b) Calculate the equilibrium constant for this reaction

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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(a) Choose all of the statements from below which correctly describe issues pertaining to the relationship between the emf of a reaction and its Gibbs free energy change. ____The Gibbs free energy change and emf values of a reaction have opposite algebraic signs (+ vs. -).____A Gibbs free energy change involves moles of substances whereas an emf involves coulombs of electrons.____A coulomb of particles is more particles than a mole of particles.____Faraday's constant is not used to interconvert a Gibbs free energy change and a reaction emf.____A Gibbs free energy change involves coulombs of substances whereas an emf involves moles of electrons.Calculate the standard Gibbs free energy changes at 25 oC for each of the reactions shown below using the Eo values given. Select whether each of these reactions is nonspontaneous, at equilibrium, or spontaneous under standard conditions. (a) 1 Al3+(aq) + 3 Ag(s) 1 Al(s) + 3 Ag+(aq) Eo = -2.459 V Go =________ kJ/mol ____nonspontaneous…
Consider the following reaction under standard conditions, in which DHo and DSo are given. CO(g) + 2H2(g) --> CH3OH(g); DHo = -90.5 kJ, and DSo = -219.2 J/K What is DGo if the reaction is carried out at 250oC under standard conditions? Is the reaction spontaneous under this condition? (A) DGo = -35.7 kJ; the reaction is spontaneous (B) DGo = 145.3 kJ; the reaction is not spontaneous (C) DGo = -205.1 kJ; the reaction is spontaneous (D) DGo = 24.1 kJ; the reaction is not spontaneous
For a certain chemical reaction, the standard Gibbs free energy of reaction at 30.0°C is 73.3 kJ. Calculate the equilibrium constant K for this reaction. Round your answer to 2 significant digits.
. Using the table provided, calculate the thermodynamic property of interest for each given reaction. Thermodynamic Data at 25 °C Species AH in kJ/mol AGº in kJ/mol So in J/(mol·K) Cu (s) 33.2 Cu (g) 337.4 297.7 166.4 CuO (s) -157.3 -129.7 42.6 H2 (g) 131.0 H2O (g) -241.8 -228.6 188.7 H2O (€) -285.8 -237.2 69.9 NO (g) 91.3 87.6 210.8 NO2 (g) 33.2 51.3 240.1 N2O4 (E) -19.5 97.5 209.2 N2O4 (g) 9.16 99.8 304.4 O2 (g) 205.0 ) Determine AS° for H2 (g) + ½ O2 (g) → H2O (g) at 25 °C. (ii) Determine AG° for 2 Cu (s) + O2 (g) → 2 CuO (s) at 25 °C. (iii) Determine AH° for H2O (8) → H2O (g) at 100 °C. (iv) Determine AG° for 2 NO2 (g) + N2O4 (g) at 100 °C.
also, Change in Gibbs Free energy Reaction Spontaneity
At -8.64 °C the concentration equilibrium constant K = 7.7 for a certain reaction. Here are some facts about the reaction: -1 • The initial rate of the reaction is 5.3 mol·L¯¹·s¯¹. . If the reaction is run at constant pressure, 132. kJ/mol of heat are absorbed. • The constant pressure molar heat capacity C = 2.97 J'mol K¹. Yes. Using these facts, can you calculate K at 16. °C? x10 O No. If you said yes, then enter your answer at right. Round it to 2 significant digits. If you said no, can you at least decide whether Kat 16. °C will be bigger or smaller than K at -8.64 °C? C Yes, and K will be bigger. Yes, and K will be smaller. No.
For a certain chemical reaction, the standard Gibbs free energy of reaction at 10.0 °C is 135. kJ. Calculate the equilibrium constant K for this reaction. Round your answer to 2 significant digits. K= |
(Q70) Using the tabulated values from the text (located in Appendix G, beginning at p. 1211) calculate (and report in kJ) the standard Gibbs free energy (AG°rxn) for the net reaction that occurs during photosynthesis: 6 H₂O (1) + 6 CO₂ (g) --> C6H12O6 (s) + 6 0₂ (g). The AG°f for glucose (C6H₁2O6) is -1273.3 kJ/mol.
11. What is the ΔHº-value for the dissolution of NaOH (s) to yield 1.00... m NaOH (aq), given: Na (s) + 1/2 O2 (g) + 1/2 H2 (g) → NaOH (s) ΔHfº = -425.9 kJ/mol Na (s) + 1/2 O2 (g) + 1/2 H2 (g) → NaOH (aq, 1 m) ΔHfº = -469.2 kJ/mol Multiple Choice -895.1 kJ/mol -43.3 kJ/mol +1.102 kJ/mol +43.3 kJ/mol +895.1 kJ/mol