5. (opts total) a. For a certain reaction, AH = 142 kJ/mol and AS = -...
help with all of these please 19. For a certain reaction, AH -35.4 kJ and AS - 85.5 / a) is the reaction endothermic or exothermic? b) Does the reaction lead to an increase or decrease in the disorder of the system? c) Calculate AGº for the reaction at 298K d) is the reaction spontaneous at 298K? 20. The sublimation of solid carbon dioxide is a spontaneous process. Predict the sign (+,-, or 0) of AG", AH", and As,", respectively....
AG°= AH-TAS AG=AGº+RTinQ where R=8.314 J/mol K 1. Calculate AGº for the following reaction at 25 °C if AH°= -1854 kJ/mol; AS°= -236 J/mol K CH-COCH3(g) + 402(g) → 3C02(g) + 3H2O(1) 2. NH.NO, dissolving in water is a spontaneous process. As it dissolves, the temperature of the solution decreases. Based on this, what must the signs (positive or negative) of AG, AH, and AS be?
1. A reaction has AH = 100 kJ/mol and AS = 250 J/mol K. a. Is the reaction spontaneous at room temperature? b. If not, under what temperature conditions will it become spontaneous? 2. Consider the following reaction at 298 K: N204(g) = 2NO2(g) KP=0.142 What is the standard free energy change at this temperature? Is the reaction spontaneous at this temperature?
→ Fe(s) + CO2(g), AGº is - 5.8 kJ and AH° is -11 kJ. Sº (J mol-? K-'); 4. For the reaction Fe(s) + CO(g) Fe (27.3), CO(197.5), CO (213.7) a) What is AS sur? [37 JK-'] b) Use AG to determine whether the reaction is spontaneous or nonspontaneous under standard conditions. Explain. c) Use AS univ to determine whether the reaction is spontaneous or nonspontaneous under standard conditions. Explain. d) What is Sº for FeO? [61 J mol-'K-']
TCO2E05 A particular reaction has AH = +27 kJ/mol and AGʻ = -42 kJ/mol. Which of the following best describes this reaction? Select one: O a. The reaction is endothermic and spontaneous. b. The reaction is endothermic and not spontaneous. c. The reaction is endothermic and could be spontaneous or not spontaneous depending on the sign of AS° O d. The reaction is exothermic and could be spontaneous or not spontaneous depending on the sign of AS° e. The reaction...
Given the following reaction and thermodynamic data: A(g) - B(g AH = -42.3 kJ/mol; AS = -125.2 J/(mol*K) Is this reaction spontaneous or non-spontaneous? Select one: a. non-spontaneous. o b. spontaneous. c. more information is needed to determine.
At what temperature will a reaction be spontaneous? AH = +22.2 kJ/mol and AS = +81.1 J/K-mol and assume both do not vary with temperature. at T > 298 K at all temperatures at T < 298 K at T < 274 K at T> 274 K
At what temperature will a reaction be spontaneous? AH- +222 kJ/mol and AS - +811 J/K-mol and assume both do not vary with temperature. at T> 298 K at all temperatures at T > 274 K at T<274K at T < 298 K
The enthalpy of a certain reaction is +233 kj/mol and the entropy is +110J/molk. Above what temperature will the reaction be spontaneous. The enthalpy of a certain reaction is +233 kJ/mol, and the entropy is +110 J/mol K. Above what temperature will the reaction be spontaneous? 8.
AH = 44.0 kJ/mol AS = 0.119 kJ/mol K The following reaction takes place at 120°C: H20(1) - H2O(g) Which of the following must be true? Select one: O a. Two of these O b. The reaction is not spontaneous O c The reaction is spontaneous. O d. AG = 0 e. AGO