Homework Answers
Ans. 1. Statement B is incorrect. Note the stoichiometry of balanced reaction, 2 mol SO3 decomposes into 2 mol SO2 and 1 mol O2. So, the dG of the reaction is given according to the stoichiometry of balanced reaction-
dG0 = (dG0f for O2 + 2 x dG0f for SO2) – (2 x dG0f for SO3)
Statement A is correct because stoichiometry affects dG0 calculation as shown above.
Statement C is correct. A reaction with negative dG0 is spontaneous, i.e. favors product formation.
Statement D is also correct that the table gives dG0f values for 1 mol of chemical species.
Ans 2. Statement C is incorrect. At dG = 0, the reaction is equilibrium and reaction favored neither towards the reactants nor towards the products- not even the slightest.
Option A is correct as dG is often mentioned as kJ/mol
Option B is correct as a positive dG indicates the reaction to be favored in backward direction forming the reactants.
Option D. correct. See 1C.
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Look at the following reaction. O The Stoichiometry for this reaction affects your calculations for AG...
Calculate AG for the reaction 2 SO2 (g) + O2 (g) → 2 SO3 (g) when...
Calculate AG for the reaction 2 SO2 (g) + O2 (g) → 2 SO3 (g) when P of SO2 = 0.500 atm, P of O2 = 0.0100 atm, and P of SO3 = 0.100 atm. The value for AGº for this reaction at 298 K is -141.6 kJ. AG= O * kJ Is this reaction spontaneous or non-spontaneous under these conditions? Spontaneous or non-spontaneous? spontaneous
7 Coleulate Kt Given the following data: 4. (Equation 1) S(s) +3/202(g) - SO3(g) AG= -...
7 Coleulate Kt Given the following data: 4. (Equation 1) S(s) +3/202(g) - SO3(g) AG= - 371 kJ slsb to gts2 gniwollot od lo do09 rw onimtsbThan 24 HA To (Equation 2) 2SO2(g)+ O2(g)2 SO3(g) AG°= - 142 kJ SO2(g) Calculate AG° for the goal equation S(s) +O2(g) 008 Is this reaction spontaneous? 00 02T 00 noitons gaivollot slt To doc9 10l 2410
A) An important reaction in the manufacture of sulfuric acid is the oxidation of SO2(g) to SO3(g)...
a) An important reaction in the manufacture of sulfuric acid is the oxidation of SO2(g) to SO3(g): 2. 2SO2(g) O2(g)SO3(g) dGo, ΔΗο, and ASo values for the reaction are-141 .6kJ/mol,-1984kJ/mol and -187.9J/Kmol, respectively. Evaluate whether or not the reaction is spontaneous under standard conditions at 298K, predict the effect of increasing temperature on spontaneity and calculate the value of T at which the reaction becomes nonspontaneous. b) The reaction described in part (a) is too slow at room temperature to...
Consider the reaction listed below along with the accompanying thermodynamic data, carried out at 25 °C...
Consider the reaction listed below along with the accompanying thermodynamic data, carried out at 25 °C and 1 atm: 2SO2(g) + O2(g) ↔ 2SO3(g) Substance ∆Hf° (kJ/mol) S° (J/K • mol) SO2(g) -297 248 O2(g) 0 205 SO3(g) -396 257 A.Calculate ∆H°. B. Calculate ∆S°. C. Calculate ∆G°. Is this reaction spontaneous? Briefly explain. D. At what temperature will this reaction first become spontaneous? E. Calculate the equilibrium constant for this reaction.
For each part below, use the data below to calculate AG at 205 K for each...
For each part below, use the data below to calculate AG at 205 K for each of the following reactions. Then use the data in the chart to determine whether each reaction is spontaneous at 205 K. H2S(g) O2(g) H20(g) SO2(g) SO3(g) H2SO4 -690.0 S(g) H20(1) 33.01 0 -228.6 300.1 371.1 205.6 205.0 188.7 248.2 256.8 156.9 167.8 70.0 20.17 0 241.8 296.8 395.7 814.0 277.2 285.8 236.7 237.2 2S02(g)+02(2)>2S0,(g) ΔG205 -151.8 kJ Choose one: Spontaneous Nonspontaneous SO,( H20)HS40) AG205-...
5) For the reaction 2 SO2(g) + O2(g) → 2 SO3(g), if initially P(SO2) = 1.2...
5) For the reaction 2 SO2(g) + O2(g) → 2 SO3(g), if initially P(SO2) = 1.2 atm, P(O2) = 1.8 atm, and P(SO3) = 2.1 atm, calculate AG for this reaction at 25°C. The following data is valid at 25°C: AG° (kJ/mol) SO 300.4 SO3 370.4 A) -140.0 kJ/mol B)-141.3 kJ/mol C)-138.7 kJ/mol D) 1,174.7 kJ/mol E) -137.6 kJ/mol
Consider the reaction of NO(g) from its elements. 2 502(g) + O2(g) → 2 SO3(9) Use...
Consider the reaction of NO(g) from its elements. 2 502(g) + O2(g) → 2 SO3(9) Use the thermodynamic data given to determine the following for this reaction: AH°, equal O kJ/mol Asº, equals O J/molk Calculate the AG, at 500 °c with all gases at standard pressure and equilibrium constant K at 500 °C. AG, at 500 °c equals O kJ/mol K at 500 equals tance (kJ/mol) (J/mol-K) O2(g) 205.2 SO2(g) -296.8 248.2 SO3(9) -395.7 240.0 AHO so
please help 4. Given the following entropies: So for SO2(g) = 0.249 kJ/mole K So for...
please help
4. Given the following entropies: So for SO2(g) = 0.249 kJ/mole K So for O2 (g) = 0.205 kJ/mole K So for SO3(g) = 0.256 kJ/mole K, Calculate ASo for the reaction 2 SO2(g) +O2(g)→ 2SO3(g)
and 50. Given the following, determine AGof at 298 K for SnO. Sn(s)+SnO2(s) 2SnO(s); AG° =...
and
50. Given the following, determine AGof at 298 K for SnO. Sn(s)+SnO2(s) 2SnO(s); AG° = 12.0 kJ at 298K Substance AGOF(kJ/mol) at 298 K SnO(s) SnO2(s) ? -515.8 95. Consider the following reaction: 3C(s)+4H2(g) -C3H8(g); AH =-104.7 kJ; AS° = -287.4J/K at 298 K What is the equilibrium constant at 400.0 K for this reaction?
The following reaction is exothermic. Which change will shift the equilibrium to the right? 2 SO2...
The following reaction is exothermic. Which change will shift the equilibrium to the right? 2 SO2 (g) + O2 (g) = 2 So, (9) o Adding So, Decreasing the volume of the reaction flask Removing O2 Heating the reaction QUESTION 11 A positive AGⓇ for a reaction implies The reaction is never spontaneous The products predominate at equilibrium The reaction is always spontaneous The reactants predominate at equilibrium ОО QUESTION 12 Which of the following is TRUE regarding AG and...
Calculate AG for the reaction 2 SO2 (g) + O2 (g) → 2 SO3 (g) when P of SO2 = 0.500 atm, P of O2 = 0.0100 atm, and P of SO3 = 0.100 atm. The value for AGº for this reaction at 298 K is -141.6 kJ. AG= O * kJ Is this reaction spontaneous or non-spontaneous under these conditions? Spontaneous or non-spontaneous? spontaneous
7 Coleulate Kt Given the following data: 4. (Equation 1) S(s) +3/202(g) - SO3(g) AG= - 371 kJ slsb to gts2 gniwollot od lo do09 rw onimtsbThan 24 HA To (Equation 2) 2SO2(g)+ O2(g)2 SO3(g) AG°= - 142 kJ SO2(g) Calculate AG° for the goal equation S(s) +O2(g) 008 Is this reaction spontaneous? 00 02T 00 noitons gaivollot slt To doc9 10l 2410
a) An important reaction in the manufacture of sulfuric acid is the oxidation of SO2(g) to SO3(g): 2. 2SO2(g) O2(g)SO3(g) dGo, ΔΗο, and ASo values for the reaction are-141 .6kJ/mol,-1984kJ/mol and -187.9J/Kmol, respectively. Evaluate whether or not the reaction is spontaneous under standard conditions at 298K, predict the effect of increasing temperature on spontaneity and calculate the value of T at which the reaction becomes nonspontaneous. b) The reaction described in part (a) is too slow at room temperature to...
For each part below, use the data below to calculate AG at 205 K for each of the following reactions. Then use the data in the chart to determine whether each reaction is spontaneous at 205 K. H2S(g) O2(g) H20(g) SO2(g) SO3(g) H2SO4 -690.0 S(g) H20(1) 33.01 0 -228.6 300.1 371.1 205.6 205.0 188.7 248.2 256.8 156.9 167.8 70.0 20.17 0 241.8 296.8 395.7 814.0 277.2 285.8 236.7 237.2 2S02(g)+02(2)>2S0,(g) ΔG205 -151.8 kJ Choose one: Spontaneous Nonspontaneous SO,( H20)HS40) AG205-...
5) For the reaction 2 SO2(g) + O2(g) → 2 SO3(g), if initially P(SO2) = 1.2 atm, P(O2) = 1.8 atm, and P(SO3) = 2.1 atm, calculate AG for this reaction at 25°C. The following data is valid at 25°C: AG° (kJ/mol) SO 300.4 SO3 370.4 A) -140.0 kJ/mol B)-141.3 kJ/mol C)-138.7 kJ/mol D) 1,174.7 kJ/mol E) -137.6 kJ/mol
Consider the reaction of NO(g) from its elements. 2 502(g) + O2(g) → 2 SO3(9) Use the thermodynamic data given to determine the following for this reaction: AH°, equal O kJ/mol Asº, equals O J/molk Calculate the AG, at 500 °c with all gases at standard pressure and equilibrium constant K at 500 °C. AG, at 500 °c equals O kJ/mol K at 500 equals tance (kJ/mol) (J/mol-K) O2(g) 205.2 SO2(g) -296.8 248.2 SO3(9) -395.7 240.0 AHO so
please help
4. Given the following entropies: So for SO2(g) = 0.249 kJ/mole K So for O2 (g) = 0.205 kJ/mole K So for SO3(g) = 0.256 kJ/mole K, Calculate ASo for the reaction 2 SO2(g) +O2(g)→ 2SO3(g)
and
50. Given the following, determine AGof at 298 K for SnO. Sn(s)+SnO2(s) 2SnO(s); AG° = 12.0 kJ at 298K Substance AGOF(kJ/mol) at 298 K SnO(s) SnO2(s) ? -515.8 95. Consider the following reaction: 3C(s)+4H2(g) -C3H8(g); AH =-104.7 kJ; AS° = -287.4J/K at 298 K What is the equilibrium constant at 400.0 K for this reaction?
The following reaction is exothermic. Which change will shift the equilibrium to the right? 2 SO2 (g) + O2 (g) = 2 So, (9) o Adding So, Decreasing the volume of the reaction flask Removing O2 Heating the reaction QUESTION 11 A positive AGⓇ for a reaction implies The reaction is never spontaneous The products predominate at equilibrium The reaction is always spontaneous The reactants predominate at equilibrium ОО QUESTION 12 Which of the following is TRUE regarding AG and...
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