반응형 일반화학/[19장] 화학 열역학70 methyl isocyanate (CH3NC) isomerizes to acetonitrile (CH3CN) methyl isocyanate (CH3NC) isomerizes to acetonitrile (CH3CN) 기체 상태에서 메틸 이소시아네이트(CH3NC)는 아세토나이트릴(CH3CN)으로 이성화한다. 25℃에서 ΔH° = –89.5 kJ/mol, ΔG° = –73.8 kJ/mol이다. 100℃에서 이 반응의 평형 상수를 찾아라. In the gas phase, methyl isocyanate (CH3NC) isomerizes to acetonitrile (CH3CN), H3C–N≡C(g) ⇌ H3C–C≡N(g) with ΔH° = –89.5 kJ/mol and ΔG° = –73.8 kJ/mol at 25℃. Find the equilibrium constant for this reaction at 100.. 2021. 12. 31. Boudouard 2CO(g) ⇌ C(s) + CO2(g) 5.07 MPa 1.00 mol% CO Boudouard 2CO(g) ⇌ C(s) + CO2(g) 5.07 MPa 1.00 mol% CO Consider the Boudouard reaction: 2CO(g) ⇌ C(s) + CO2(g) Thermodynamic data on these gases are given in Appendix C. You may assume that ΔH° and ΔS° do not vary with temperature. a) At what temperature will an equilibrium mixture of 101.3 kPa total pressure contain 1.00 mol% CO? b) At what temperature will an equilibrium mixture of 5.07 MPa to.. 2021. 12. 11. Boudouard 2CO(g) ⇌ C(s) + CO2(g) 101.3 kPa 1.00 mol% CO Boudouard 2CO(g) ⇌ C(s) + CO2(g) 101.3 kPa 1.00 mol% CO Consider the Boudouard reaction: 2CO(g) ⇌ C(s) + CO2(g) Thermodynamic data on these gases are given in Appendix C. You may assume that ΔH° and ΔS° do not vary with temperature. a) At what temperature will an equilibrium mixture of 101.3 kPa total pressure contain 1.00 mol% CO? b) At what temperature will an equilibrium mixture of 5.07 MPa t.. 2021. 12. 11. 25℃ Kw 1.0×10^(-14) ΔG° H2O(l) ⇌ H^+(aq) + OH^-(aq) 25℃ Kw 1.0×10^(-14) ΔG° H2O(l) ⇌ H^+(aq) + OH^-(aq) 25℃ Kw 1.0×10^(-14) ΔG° 2H2O(l) ⇌ H3O^+(aq) + OH^-(aq) Consider the autoionization of water at 25℃. H2O(l) ⇌ H^+(aq) + OH^-(aq) ... Kw = 1.0×10^(-14) Calculate ΔG° for this process at 25℃. --------------------------------------------------- ΔG° = –RT lnK ( 참고 https://ywpop.tistory.com/10336 ) = –(8.314) (273.15 + 25) ln(1.0×10^(-14)) = 79908 J/.. 2021. 12. 10. ΔG 계산. 2NH3(g) + CO2(g) → NH2CONH2(aq) + H2O(l) ΔG 계산. 2NH3(g) + CO2(g) → NH2CONH2(aq) + H2O(l) Urea (NH2CONH2), an important nitrogen fertilizer, is produced industrially by the reaction 2NH3(g) + CO2(g) → NH2CONH2(aq) + H2O(l) Given that ΔG° = –13.6 kJ/mol, calculate ΔG at 25℃ for the following sets of conditions: P_NH3 = 10 atm P_CO2 = 10 atm [NH2CONH2] = 1.0 M --------------------------------------------------- Q = [NH2CONH2] / ((P_NH3)^2.. 2021. 11. 29. ΔG 계산. 2NH3(g) + CO2(g) → NH2CONH2(aq) + H2O(l) ΔG 계산. 2NH3(g) + CO2(g) → NH2CONH2(aq) + H2O(l) ΔG° = –13.6 kJ/mol 반응 조건: 25℃, P_NH3 = P_CO2 = 6.0 atm, [NH2CONH2] = 1.25 M --------------------------------------------------- Q = [NH2CONH2] / ((P_NH3)^2 (P_CO2)) = (1.25) / ((6.0)^2 (6.0)) = 0.005787037 ΔG = ΔG° + RTlnQ ( 참고 https://ywpop.tistory.com/10336 ) = (–13600) + (8.314) (273.15+25) ln(0.005787037) = –26371.2 J/mol = –26.4 kJ/mol 답: –26... 2021. 11. 28. ΔG 계산. 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l) ΔG 계산. 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l) Calculate ΔG° for the following reactions at 25℃: 2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l) --------------------------------------------------- ΔG°_rxn = [생성물들의 ΔG°_f 합] – [반응물들의 ΔG°_f 합] ( 참고 https://ywpop.tistory.com/7393 ) = [4(CO2,g) + 6(H2O,l)] – [2(C2H6,g) + 7(O2,g)] = [4(–394.4 kJ/mol) + 6(–237.13 kJ/mol)] – [2(–32.89 kJ/mol) + 7(0)] = –2934.6 kJ 답.. 2021. 11. 8. ΔG 계산. 2SO2(g) + O2(g) → 2SO3(g) ΔG 계산. 2SO2(g) + O2(g) → 2SO3(g) Calculate ΔG° for the following reactions at 25℃: 2SO2(g) + O2(g) → 2SO3(g) --------------------------------------------------- ΔG°_rxn = [생성물들의 ΔG°_f 합] – [반응물들의 ΔG°_f 합] ( 참고 https://ywpop.tistory.com/7393 ) = [2(SO3,g)] – [2(SO2,g) + (O2,g)] = [2(–370.4 kJ/mol)] – [2(–300.4 kJ/mol) + (0)] = –140.0 kJ 답: –140.0 kJ 2021. 11. 8. ΔG 계산. 2Mg(s) + O2(g) → 2MgO(s) ΔG 계산. 2Mg(s) + O2(g) → 2MgO(s) Calculate ΔG° for the following reactions at 25℃: 2Mg(s) + O2(g) → 2MgO(s) --------------------------------------------------- ΔG°_rxn = [생성물들의 ΔG°_f 합] – [반응물들의 ΔG°_f 합] ( 참고 https://ywpop.tistory.com/7393 ) = [2(MgO,s)] – [2(Mg,s) + (O2,g)] = [2(–569.6 kJ/mol)] – [2(0) + (0)] = –1139.2 kJ 답: –1139.2 kJ 2021. 11. 8. 25℃ 평형상수(Kp) 계산. CuS(s) + H2(g) → H2S(g) + Cu(s) 25℃ 평형상수(Kp) 계산. CuS(s) + H2(g) → H2S(g) + Cu(s) For the reaction CuS(s) + H2(g) → H2S(g) + Cu(s), G_f (CuS) = –53.6 kJ/mol G_f (H2S) = –33.6 kJ/mol H_f (CuS) = –53.1 kJ/mol H_f (H2S) = –20.6 kJ/mol Calculate the value of the equilibrium constant (Kp) for this reaction at 298 K. --------------------------------------------------- ΔG°_rxn = [생성물들의 ΔG°_f 합] – [반응물들의 ΔG°_f 합] ( 참고 https://ywpop.tis.. 2021. 11. 4. 이전 1 2 3 4 5 6 7 다음 반응형
