Which reaction has a positive ΔS value?


Which reaction has a positive ΔS value? Which reaction has a positive AS value? Select one:...
5. AS is positive for the reaction A) 2H2 (g) + 02 (g) 2H20 (g) B) 2NO2 (g)N204 (g) C) CO2 (g)CO2 (s) D) C3H8 (g)5 02 (g)3CO2 (g) +4 H20 (g) E) 2Hg (I)O2 (g) 2HgO (s)
1) Which of the following processes would be expected to have the largest increase in ?Srxn per mole of benzene? a) C6H6(l) + Cl2(g) ? C6H5Cl(l) + HCl(g) b) C6H6(l) + 15/2 O2(g) ? 6CO2(g) + 3H2O(g) c) C6H6(s) ? C6H6(g) d) 6H6(s) ? C6H6(l) e) C6H6(l) + 9/2 O2(g) ? 6CO(g) + 3H2O(g) 2) The heat of fusion of acetic acid is 11.5 kJ/mol. Its melting point is 16.6 oC. The change in entropy for the melting of acetic acid in...
Which of the following would be true for a reaction that has a positive AS and a positive AH? Select one: a. It is not possible to determine without more information. b. This reaction will be nonspontaneous only at high temperatures. c. This reaction will be spontaneous only at high temperatures. d. This reaction will be spontaneous at all temperatures. e. This reaction will be nonspontaneous at all temperatures. You prepared a galvanic cell using Pb(s) | Pb+2(aq) || Hg'...
Predict the sign of the entropy change, ΔS∘, for each of the reaction displayed. Ba2+ (aq) + SO42- (aq) --> BaSO4 (s) 2NO2 (g) --> N2 (g) + 2O2 (g) C5H12 (g) + 8O2 (g) --> 5CO2 (g) + 6H2O (g) 2NaClO3 (s) --> 2NaCl (s) + 3O2 (g) 2Na (s) + Cl2 (g) --> 2NaCl (s) CH3OH (l) --> CH3OH (g)
ΔS is negative for the reaction ________. 2H2O (g) → 2H2 (g) + O2 (g) LiOH (aq) → Li+ (aq) + OH– (aq) CH3OH (l) → CH3OH (g) Sr(NO3)2 (aq) + 2LiOH (aq) → Sr(OH)2 (s) + 2LiNO3 (aq) C6H12O6 (s) → 6C (s) + 6H2 (g) + 3O2 (g)
Which reaction or process has the greatest positive change in entropy, AS? A. 2 SO2(g) + O2(g) - 2 SO3(g) B. 2 KCIO3(s) - 2 KCl(s) + 3 O2(g) C. 2 Mg(s) + O2(E) – 2 Mgo(s) OD.2 C2H2(g) +5 O2(g) – 4 CO2(g) + 2 H20(1) E. Ag+(aq) + Cit(aq) – AgCl(s)
44" What is the sign of ΔΗ (system) and AS (system) if a chemical reaction is spontaneous at all temperatures under stan conditions? a. AH (system) is negative, and ΔS (system) is positive. b. AH (system) is negative, and AS (system) is negative. C. AH (system) is positive, and AS (system) is positive. d. AH (system) is positive, and AS (system) is negative. e. none of these 45. For which of the following reactions will the entropy of the system...
Consider a reaction that has a positive ΔH and a positive ΔS. Which of the following statements is TRUE? A)This reaction will be nonspontaneous only at high temperatures. B)This reaction will be nonspontaneous at all temperatures. C)This reaction will be spontaneous at all temperatures. D)This reaction will be spontaneous only at high temperatures. E)It is not possible to determine without more information.
18. Which of the following is the formation reaction for NaBr, corresponding to AH2 A. HBr(aq) + NaOH(aq) H:0(1) + NaBr(aq) B. Na(s) - V2 Brz() NaBr(s) C. 2 Na(s) + Brz(1) ► 2NaBr(s) D. Na(g) + Br(g) NaBr(s) E. NaBr(s) Na (aq) + Br(aq) 19. Which of the following systems" should have a positive change in entropy? A. 2 H2(g) + O2(g) → 2 H 0(0- B 2 H2(g) + O2(g) + 2 H2O(g) C. H2O(1) H.O(s) D. N204(0)...
Predict the sign of the entropy change, ΔS∘, for each of the reaction displayed. Drag the appropriate items to their respective bins. Pb2+(aq)+2Cl−(aq)→PbCl2(s) CaCO3(s)→CaO(s)+CO2(g) 2NH3(g)→N2(g)+3H2(g) 2Mg(s)+O2(g)→2MgO(s) C5H12(g)+8O2(g)→5CO2(g)+6H2O(g) H2O(l)→H2O(g) Positive Negative