Silver oxide decomposes based on the reaction: 2 Ag20 (s) → 4 Ag (s) + 02 (g) The standard molar enthalpy of formation AH°F and the standard molar entropy s°m of the reacting species of this reaction are given below. Note AH°fand s°m are temperature independent. Ag20 (s) Ag (s) 02 (8) AH°F (k/mol) -31.05 s°m U/K-mol) 121.34 42.55 205 Which of the following statements is correct regarding this reaction at different temperatures? O a. At 25 °C, the equilibrium constant of this reaction is Kp >1 (pressure based equilibrium constant). O b. At 25 °C, the entropy change of surroundings AS(surroundings) > 0. O. The equilibrium constant of this reaction increases as temperature is increased. d. The reaction is non-spontaneous at all temperatures. e. None of the above

Silver oxide decomposes based on the reaction: 2 Ag20 (s) → 4 Ag (s) + 02 (g) The standard molar enthalpy of formation AH°F and the standard molar entropy s°m of the reacting species of this reaction are given below. Note AH°fand s°m are temperature independent. Ag20 (s) Ag (s) 02 (8) AH°F (k/mol) -31.05 s°m U/K-mol) 121.34 42.55 205 Which of the following statements is correct regarding this reaction at different temperatures? O a. At 25 °C, the equilibrium constant of this reaction is Kp >1 (pressure based equilibrium constant). O b. At 25 °C, the entropy change of surroundings AS(surroundings) > 0. O. The equilibrium constant of this reaction increases as temperature is increased. d. The reaction is non-spontaneous at all temperatures. e. None of the above

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 chemical engineer is studying the two reactions shown in the table below. In each case, she fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 25.0 °C and constant total pressure. Then, she measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of her measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. 2NO(g) N₂(g) + O₂(g) - - N₂H (9) + H₂(g) → 2NH₂(g) ΔΗ = = 181. ΚΙ AS-568. AG = KJ Which is spontaneous? Othis reaction O the reverse reaction Oneither AH-188. kJ J K AS = D² K AG=…
3.) Consider the reaction below. Reaction: AH°r (kJ/mole) 2 ICI (£) 17.78 L. (g) 247.551 l16.135 223.066 (/mole K) Which explains the outcome when 0.45 mol ½, 0.45 mol Cl2, and 2.42 mol ICl are added to a 2.0L flask at 25°C? A. [ICI] decreases B. [ICI] increases C. both [b] and [CL] increase D. at equilibrium Keywords: reaction quotient (Q), initial concentration(s), equilibrium concentration(s), equilibrium constant, forward reaction, reverse reaction, Q K. Q= K Concepts: Reaction Quotient, Chemical equilibrium
Consider the following reaction at 25 °C: 5 SO3(g) + 2 NH3(g) → 2 NO(g) + 5 SO2(g) + 3 H2O(g) If AH° = 42.4 kJ./mol and AS° = 562.3 J/mol•K, estimate the temperature at which this reaction would be at equilibrium assuming that enthalpy and entropy are independent of temperature. %3D %3D
Consider the following reaction at 25 °C: 5 SO3(g) + 2 NH3(g) → 2 NO(g) + 5 SO2(g) + 3 H20(g) If AH° = 42.4 kJ./mol and AS° = 562.3 J/mol•K, estimate the temperature at which this reaction would be at equilibrium assuming that enthalpy and entropy are independent of temperature. %3D %3D
The energy produced by a spontaneous reaction is often used to provide the energy to drive nonspontaneous reactions. For example, the conversion of ATP to ADP in our cells acts as the energy source for the nonspontaneous reactions that combine amino acids during protein synthesis. Here is the conversion of ATP to ADP: ATP(aq) + H,O = ADP(aq) + HPO,²-(aq) AG° = -30.0 kj/mol A typical reaction combining two amino acids during protein synthesis has a AG = 15.0 kJ/mol. What is the minimum ATP concentration required to provide the energy to combine 1 mole of amino acid synthesis (total energy = 15.0 kJ)? Assume that the concentration of ADP = 9 µM (micromolar) and HPO42- = 4 mM (millimolar). %3! %3D
< 8:41 1 4 7 +/- Question 1 of 17 When heated, CaCO3 decomposes into CaO and CO₂ according to the following equation: CaCO3(s) CaO(s) + CO₂(g) This is an endothermic reaction in which AH° = 178.3 kJ/mol and in which entropy increases, AS° = 159 J/mol K. To what temperature (in °C) must CaCO3 be heated in a closed container in order to produce CO₂ at an equilibrium pressure of 0.250 atm? (Assume AH° and AS° do not change appreciably with temperature). 2 5 8 °C 3 60 9 O Submit Tap here or pull up for additional resources XU x 100
A chemical engineer is studying the two reactions shown in the table below. In each case, she fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 69.0 °C and constant total pressure. Then, she measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of her measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. HCH, CO₂(1)→ CH₂OH(g) + CO(g) Al₂O₂ (s) + 2Fe(s) -> 2A1(s) + Fe₂O₂ (s) AH = 172. kJ AS = 543. AG = Which is spontaneous? O this reaction O the reverse reaction Oneither ΔΗ = 852. kJ…
Elemental carbon usually exists in one of two forms: graphite or diamond. It is generally believed that diamonds last forever. The table shows the standard enthalpy of formation (AH) and the standard molar entropy (Sº) values for diamond and graphite. Part A AGrxn= What is the standard Gibbs free energy for the transformation of diamond to graphite at 298 K? Cdiamond →Cgraphite Submit Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) O Substance Cgraphite Cdiamond μA Value AH (kJ/mol) Units 0 1.897 ? S° (J/mol. K) 5.740 2.38
A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 114.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. ol. Ar AH = 852. kJ J AS = 2176. Al, 0, (s) + 2Fe(s) → 2 A1(s) + Fe,0, (s) AG = | kJ Which is spontaneous? this reaction the reverse reaction neither
A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 133.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. 2CH₂OH(g) + 30₂(g) → 2CO₂(g) + 4H₂O(g) 4H₂PO4(s) P4O10 (s) + 6H₂0 (1) AH-1353. kJ AS = -3331. AG = Which is spontaneous? Othis reaction O the reverse reaction Oneither ΔΗ = 439. kJ -…
For the reaction CO2(s) → CO2(g) the entropy change for the reaction, delta Sº, at 298K is 84.7 J mol-1 K-1. What would be the value of delta Sº if the reaction is performed instead at 400 K. The heat capacity of CO2 (g) is 37.35 J mol-1 K-1, the enthalpy of sublimation of CO2 under standard conditions is 26 kJ mol-1, and the temperature at which the phase change occurs is -78.5 degrees C...
AG (ky/mol) SUbStance / 1on so (ky/mol) -1206.9 /moi k) 92.9 • CaC03l>) -|128.8 • CaO (s) |- 635. I – 60 3.5 38.2 • CO2(9) - 393.5 - 394.4 213.7 191.5 3 H2(g) 202.7 ZNH3 ) -45.9 -16 193 • Hz (g) 202.7 223.0 -92.31 - 95. 30 186.79