O Using the values of AH and AS for the reactants and products from the tables, determine the values for AHon and AS for the reaction below and then use these values to calculate the AG for the reaction at 25°C. Explain whether this reaction is spontaneous as written. CHSOH - CHỊCHO (g) + H₂ (8) What would be the value of AGO for the reaction at 1125°C? Explain whether this reaction is spontaneous as written at this temperature.

O Using the values of AH and AS for the reactants and products from the tables, determine the values for AHon and AS for the reaction below and then use these values to calculate the AG for the reaction at 25°C. Explain whether this reaction is spontaneous as written. CHSOH - CHỊCHO (g) + H₂ (8) What would be the value of AGO for the reaction at 1125°C? Explain whether this reaction is spontaneous as written at this temperature.

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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1. Calculate AS univ for the following reaction. Determine if spontaneous or nonspontaneous. T = 298 K SiO2(s) + 4 HF(g) → SiF4(g) + 2 H2O(1)
Consider a reaction that has a negative AH and a negative AS. Which of the following statements is TRUE? A) This reaction will be nonspontaneous at all temperatures. B) This reaction will be spontaneous at all temperatures. C) This reaction will be nonspontaneous only at high temperatures. D) This reaction will be spontaneous only at high temperatures. E) It is not possible to determine without more information. Given the following equation, N20(g) + NO2(g) → 3 NO(g) AG°rxn = - 23.0 kJ Determine AG°rn for the following reaction. 3 NO(g) → N20(g) + NO2(g) A) -69.0 kJ B) -23.0 kJ C) 69.0 kJ D) -7.67 kJ E) 23.0 kJ
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For a chemical reaction that is spontaneous at standard conditions, which of the following holds? ΔGorxn > 0; Eocell < 0; K < 1 ΔGorxn > 0; Eocell > 0; K < 1 ΔGorxn < 0; Eocell > 0; K > 1 ΔGorxn < 0; Eocell < 0; K > 1
Use the data given here to calculate the values of AGn at 25 °C for the Compound AG; (kJ/mol) reaction described by the equation A +387.7 A + B 2C B - 596.8 C +402.0 543.1 AGixn kJ Incorrect If AHxn and ASxn are both negative values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is enthalpy-driven to the left. entropy-driven to the right. entropy-driven to the left. O enthalpy-driven to the right. Incorrect O O O O
Which statement is true regarding a process for which AH is negative and AS is zero? Recall that, for any process: AG=AH-TAS O The process is not spontaneous at any temperature. O The process is spontaneous at high temperatures only. O The process is spontaneous at low temperatures only. The process is spontaneous at all temperatures. Hint Save for Later Su
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2 For the synthesis of ammonia where AG = -33.3 kJ/mole, determine whether the reaction is spontaneous at 25 C with the following pressures: PN, = 1.0 atm, PH, = 3.0 atm, PNH, = 0.020 atm N2(8) + 3H2(g) = 2NH3(g)
59. Methanol (CH3OH) burns in oxygen to form carbon dioxide and water. Write a balanced equation for the combustion of liq- uid methanol and calculate AHan, ASs and AG at 25 C. Is the combustion of methanol spontaneous?
6. For each reaction below, determine the sign of AH and AS. Also state under what conditions the reaction is spontaneous (in the forward direction): (a) never spontaneous, (b) always spontaneous, (c) spontaneous at low temperatures, or (d) spontaneous at high temperatures. 1) C2 (g) → 2 Cl (g) (ii) 2 C2H6 (g) + 7 O2 (g) → 4 CO2 (g) + 6 H2O (g)