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IULUIUILIU PUUDU be spontaneous? The reaction of gascous H, and liquid Br2 to give gascous HBr...
Problem 7.7 The melting of sold ice to give liquid water has AH-144 kcal/ mol(+602 kJ/mol...
Problem 7.7 The melting of sold ice to give liquid water has AH-144 kcal/ mol(+602 kJ/mol and AS -5.25 cal/mol.K) (220 J/(mol )) What is the value of AG for the melting process at the following temperatures? SC (265) Express your answer using two decimal places. 10 A4 OE? AG- kcal/mol kJ/mol Subm Beguest Answer Part B Is the melting spontaneous or nonspontaneous at -10° 283 K spontaneous nospontaneous in equilibrium Submit Neuts or nonpontaneous at 0273 )
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, on...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
<Chapter 7 Problem 7.41 The following reaction is used in the industrial synthesis of PVC polymer....
<Chapter 7 Problem 7.41 The following reaction is used in the industrial synthesis of PVC polymer. C1 (9) + H2C - CH (9) CICH, CH,CI(), AH = -52 kcal/mol Part A Is AS positive or negative for this process? O AS > 0 O AS <0 Submit Request Answer Part B Is this process spontaneous at all temperatures? O spontaneous at all temperatures O nonspontaneous at all temperatures O spontaneous at some but nonspontaneous at others Submit Request Answer
Which of the following best describes this dissociation reaction? (Hint: Remember that AG - AH -...
Which of the following best describes this dissociation reaction? (Hint: Remember that AG - AH - TAS, how does the entropy term change at different temperatures?) NH, NO3(s) + NH4 + (aq) + NO3-(aq) AH- +28.05 kJ/mol AS- +108.7J/mol*K Spontaneous at al temperatures Not spontaneous at any temperature Spontaneous at high T but not low T Spontaneous at low T but not high T
Q1 Q2 Q3 Is a reaction with the following values of AH and AS spontaneous at...
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Is a reaction with the following values of AH and AS spontaneous at 350 K?. AH 107 kJ AS = - 285 J/K A. The reaction is not spontaneous. B. The reaction is spontaneous. C. The reaction is at equilibrium. D. Cannot be determined Which of the following reactions represent AG°f? A. Na (s) + 1/2 F2 (g) → NaF (s) B. 2 H2 (g) + O2 (g) + 2 H20 (1) C. H30+ (aq) + OH-...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
Consider the reaction: 2HBR(g) >H2(g) + Br2() Using standard thermodynamic data at 298K, calculate the free...
Consider the reaction: 2HBR(g) >H2(g) + Br2() Using standard thermodynamic data at 298K, calculate the free energy change when 1.51 moles of HBr(g) react at standard conditions AG° kJ rxn AHof (kJ/mol) AG°F (kJ/mol) s° (J/mol K) Beryllium Вe(s) 0 9.5 -569.0 ВeO(s) -599.0 14.0 Be(ОН)2(s) -902.5 -815.0 51.9 AH°f (kJ/mol) AG°f (kJ/mol) s° (J/mol K) Bromine Br(g) 111.9 175.0 82.4 Br2() 152.2 0 0 Br2(g) 30.9 3.1 245.5 Br2(aq) -3.0 4.0 130.0 -121.0 -175.0 82.0 Br (aq) BrF3(g) -255.6...
A process at constant T and P can be described as spontaneous if AG <0 and...
A process at constant T and P can be described as spontaneous if AG <0 and nonspontaneous if AG> 0. Over what range of temperatures is the following process spontaneous? Assume that gases are at a pressure of 1 atm. (Hint: Use the data below to calculate AH and AS [assumed independent of temperature and equal to AH° and AS°, respectively] and then use the definition of AG.) 2 MnO2(s) 02(g) 2 MnO(s) AH (kJ mol) -520.0 -385.2 s° (J...
Please solve questions 1, 2 and 3 At what temperatures is the reaction below spontaneous? 2...
Please solve questions 1, 2 and 3
At what temperatures is the reaction below spontaneous? 2 H2(g) + O2(g) + 2 H2O(l) Select one: O a. at T > ~1750 K O b. at T < ~1750 K O c. at T > ~1.75 K. d. at T < ~ 1.75 K O e. The reaction is spontaneous at all temperatures. Which one of the following thermodynamic quantities is not a state function? Select one: O a. entropy b. Gibbs...
In which reactions is the AS rxn positive CIO(g) + O2(g) - CI(g) + 2O2(8) RXN...
In which reactions is the AS rxn positive CIO(g) + O2(g) - CI(g) + 2O2(8) RXN 01 203(g) 302(8) RXN 02 2 NO2(8) N204(8) RXN 03 RXN 02 only RXN 01 and RXN 02 RXN 01 only All three of the reactions None of the reactions RXN03 only RXN 02 and RXN 03 ORXN 01 and RXN03 - You have a process that is: Endothermic, Entropy decreases. Choose the best answer: O always non-spontaneous O spontaneous at high temperatures O...
Problem 7.7 The melting of sold ice to give liquid water has AH-144 kcal/ mol(+602 kJ/mol and AS -5.25 cal/mol.K) (220 J/(mol )) What is the value of AG for the melting process at the following temperatures? SC (265) Express your answer using two decimal places. 10 A4 OE? AG- kcal/mol kJ/mol Subm Beguest Answer Part B Is the melting spontaneous or nonspontaneous at -10° 283 K spontaneous nospontaneous in equilibrium Submit Neuts or nonpontaneous at 0273 )
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
<Chapter 7 Problem 7.41 The following reaction is used in the industrial synthesis of PVC polymer. C1 (9) + H2C - CH (9) CICH, CH,CI(), AH = -52 kcal/mol Part A Is AS positive or negative for this process? O AS > 0 O AS <0 Submit Request Answer Part B Is this process spontaneous at all temperatures? O spontaneous at all temperatures O nonspontaneous at all temperatures O spontaneous at some but nonspontaneous at others Submit Request Answer
Which of the following best describes this dissociation reaction? (Hint: Remember that AG - AH - TAS, how does the entropy term change at different temperatures?) NH, NO3(s) + NH4 + (aq) + NO3-(aq) AH- +28.05 kJ/mol AS- +108.7J/mol*K Spontaneous at al temperatures Not spontaneous at any temperature Spontaneous at high T but not low T Spontaneous at low T but not high T
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Is a reaction with the following values of AH and AS spontaneous at 350 K?. AH 107 kJ AS = - 285 J/K A. The reaction is not spontaneous. B. The reaction is spontaneous. C. The reaction is at equilibrium. D. Cannot be determined Which of the following reactions represent AG°f? A. Na (s) + 1/2 F2 (g) → NaF (s) B. 2 H2 (g) + O2 (g) + 2 H20 (1) C. H30+ (aq) + OH-...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
Consider the reaction: 2HBR(g) >H2(g) + Br2() Using standard thermodynamic data at 298K, calculate the free energy change when 1.51 moles of HBr(g) react at standard conditions AG° kJ rxn AHof (kJ/mol) AG°F (kJ/mol) s° (J/mol K) Beryllium Вe(s) 0 9.5 -569.0 ВeO(s) -599.0 14.0 Be(ОН)2(s) -902.5 -815.0 51.9 AH°f (kJ/mol) AG°f (kJ/mol) s° (J/mol K) Bromine Br(g) 111.9 175.0 82.4 Br2() 152.2 0 0 Br2(g) 30.9 3.1 245.5 Br2(aq) -3.0 4.0 130.0 -121.0 -175.0 82.0 Br (aq) BrF3(g) -255.6...
A process at constant T and P can be described as spontaneous if AG <0 and nonspontaneous if AG> 0. Over what range of temperatures is the following process spontaneous? Assume that gases are at a pressure of 1 atm. (Hint: Use the data below to calculate AH and AS [assumed independent of temperature and equal to AH° and AS°, respectively] and then use the definition of AG.) 2 MnO2(s) 02(g) 2 MnO(s) AH (kJ mol) -520.0 -385.2 s° (J...
Please solve questions 1, 2 and 3
At what temperatures is the reaction below spontaneous? 2 H2(g) + O2(g) + 2 H2O(l) Select one: O a. at T > ~1750 K O b. at T < ~1750 K O c. at T > ~1.75 K. d. at T < ~ 1.75 K O e. The reaction is spontaneous at all temperatures. Which one of the following thermodynamic quantities is not a state function? Select one: O a. entropy b. Gibbs...
In which reactions is the AS rxn positive CIO(g) + O2(g) - CI(g) + 2O2(8) RXN 01 203(g) 302(8) RXN 02 2 NO2(8) N204(8) RXN 03 RXN 02 only RXN 01 and RXN 02 RXN 01 only All three of the reactions None of the reactions RXN03 only RXN 02 and RXN 03 ORXN 01 and RXN03 - You have a process that is: Endothermic, Entropy decreases. Choose the best answer: O always non-spontaneous O spontaneous at high temperatures O...
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