For a reaction that is nonspontaneous at all temperatures, what must be true about its AH and AS? AH<0, AS > 0 AH <0, AS < 0 AH > 0, AS > 0 O AH>0, AS < 0
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- What is a nonspontaneous reaction?Given the data in the table below, AHrxn for the reaction Ca(OH); + 2H;AsO4 → Ca(H;AsO4)2 + 2H;O is _ kJ. [A] -4219 (B] -130.4 [C] -4519 [D] -76.4 AH, (kJ/mol) -986.6|| Substance Ca(ОН), HASO, Ca(H;AsOa)2 -900.4 -2346.0 H;0 -285.9 O A В C DUse the values of AH to calulate AH for the follonng reactions. Substance and State AH (LJ/mol) Cag(PO,),(s) C&SO (s) CH,(G) HCN(9) HC(G) H,0(g) NH(9) NH,CI(s) 0,(0) HPO,(1) H,80,(1) 4126 -433 -75 135.1 -92 -242 -46 -314 -1267 -814 (2) + N OH 0O AH" b. Caa (PO), (s) + 31, SO.(1) + 3Ca$O.(s) + 2H,PO, (1) c NH3 (g) + HCIG) NH, CI(s) AH"= kJ 888
- Me 03, -78 °C then Zn, CH;CO2HWhat is the Al for this reaction? PoO's)+2 NH,CI(s)- PbCl(s) + N;H«() + Hz0(1) + H2(g) OA 140.4 kJ 0a-253.2 kJ C-61.2 kJ O0 61.2kJ OL 253.2 kJ OF-140.4 kJ Beset SelectionA 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 136.0 °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. AH = -2220, kJ J AS = -5426. K C,H, (g) + 50,(8) → 3C0,g) + 4H,0() AG = kJ Which is spontaneous? O this reaction O the reverse reaction O neither ΔΗ 50. ky AS = 6CI, (g) + 2Fe,0.(s)…
- 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 95.0 °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. AH- 484. kJ AS - 1379. K 2H,0) – 21,(2) + 0,62) AG - OkJ Which is spontaneous? O this reaction O the reverse reaction O neither AH = 1212. kJ AS Continue Submit Assignm 0 2020…Calculate AHrxn for the reaction 2Ni(s) +2S(s) + 30,(g) 2NISO,(s) from the following information: 1. NİSO;(s) → NiO(s) + SO,(g) = 156 kJ rxn 2. S(s) +0,(g) > so,(g) AH =-297 kJ rxn 3. Ni(s) + 0,(8) NiO(s) =-241 kJ. rxn AH xn= kJReaction #1 Co() + 2H2(g) → CH:OH() AS° = -332 J/K CH.(g) + 0:(g) AS° = +162 J/K Reaction #2 CH:OH(!) – AH', AG; s° Substance (kJ mor) (kJ mot') (JK' mor') Co(g) -110.5 197.674 -238.7 -166.4 126.8 CH:OH(f) CH(g) -74.8 186.2 NOTE: You should be able to work this problem without using any additional tabulated data. (a) Calculate AH for reaction #1. (b) Calculate AGf for CO(g). (c) Calculate S° for O2(g). (d) At what temperatures is reaction #1 spontaneous?
- This question has multiple parts. Work all the parts to get the mnost points. a Calculate AH for the reaction 2K (8) + 2H2О(1 — 2KOH(ag) + H, (9) Substance and State AH, (kJ/mol) K(s) KOH(ag) H2(9) H,O(1) -481 -286 AH kJ4. Calculate AH for the reaction: 4 NH3) + 5 Ozg) 4 NOe) + 6 H2Og) from the following data. (1) Nzg) + Oze) → 2 NOg) AH = -180.5 kJ mol (2) Nzg) + 3 Hzg) 2 NH3) AH= -91.8 kJ mol" (3) 2 H2g) + Ozp) → 2 H2O4 AH=-483.6 kJ mol"!ul T-Mobile 3:08 PM T @ 28% 4 Today Edit 12:34 PM Substance (kJ/mol). SO2(g) -297 so;(g) -396 SO,Cl2(g) -364 H2SO4() -814 H20(1) -286 Determine the value of AH° in kJ for the following reaction: 2SO2(g) + O2(g) → 2SO3(g) Select one: O a. -99 kJ O b. 99 kJ O c. -198 kJ O d. 198 kJ