Which of the following processes have a AS > 0? O CH3OH(1) – CH30H(s) O N2(g) + 3 H2(g) – 2 NH3(g) O CH4(g) + H2O(g) – CO(g) + 3 H2(g) O Na2CO3(s) + H20(g) + CO2(g) – 2 NAHCO3(s) O All of the above processes have a DS > 0.
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- What is the ∆G◦ (in kJ mol−1) for the followingreaction at 25 ◦C?NO2(g) ⇌ N2O4(g)NO2(g):∆H◦ = 33 kJ mol−1; S◦ = 240 J mol−1 K−1N2O4(g):∆H◦ = 11 kJ mol−1; S◦ = 304 J mol−1 K−1A. −41.1 B. −8.8 C. −2.5 D. 16.2E. 5.24 × 104What is the std heat of reaction at 800 degrees celsius (1073.15K) for a complete combustion of liquid ethanol (C2H5OH) to carbon dioxide (CO2) and liquid water (H2O)?Given below (c): Standard gibb's free energies (∆Gf0 kJ mol-1 ): UO2 = -962.7 UO22+ = -953.5 U4+ = -579.1 Fe2+ = -78.9 Fe(OH)3 ferrihydrite = -692.07 Mn2+ = -288.1 MnO2 pyrolusite = -465.1 HS- = 12.1 H+ = 0 H2O = -237.1 S0 = 0 Given: U(VI) as uraninite; UO2 (where Mn2+ = reductant; MnO2 pyrolusite = product): ∆ Gr0 = -21.3 KJ/mol E0 (emf) = 0.110 V n = 2 F = 96.42 QUESTION: Calculate Eh equation below to calculate at different pH: – Eh = E0 + (RT/nF) * lnK For U(VI) as uraninite; UO2 (where HS- = reductant; S0 = product): UO22+ + Hs- ---- > UO2 + S + H+ [A] pH 3 [B] pH 7
- Calculate the ΔH°f of C6H12O6(s) from the following data: Show the complete and step by step solution ΔH combustion of C6H12O6(s) = -2816kJ/mol ΔH°f of CO2 (g) = -393.5 kJ/mol ΔH°f of H2O (l) = -285.9 kJ/mol Equation: C6H12O6(s) + O2(g) -> CO2(g) + H2O(l)Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C) Substance ∆H⁰f (kJ/mol) ∆G⁰f (kJ/mol) S (J/K-mol) Carbon C2H2(g) 226.7 209.2 200.8 C2H4(g) 52.30 68.11 219.4 Hydrogen H2(g) 0 0 130.58 Oxygen O2(g) 0 0 205.0 H2O(l) -285.83 -237.13 69.91 3. What is the value of ∆S⁰ for the catalytic hydrogenation of ethene to ethane: C2H4(g) + H2(g) → C2H6(g) + 2H2O(l) in J/K?Ksp for Co(OH)2 is 5.92x10^-15
- Use the following equilibria2CH4(g) C2H6(g) + H2(g) Kc1 = 9.5 × 10-13CH4(g) + H2O(g) CH3OH(g) + H2(g) Kc2 = 2.8 × 10-21to calculate the value of Kc' for the following reaction:2CH3OH(g) + H2(g) C2H6(g) + 2H2O(g)For the following compounds predict the i values & please explain why. -Sucrose -KNO3 -Na2SO4Thermodynamics Quantities for Selected Substances at 298.15 K (25⁰C) Substance ∆H⁰f (kJ/mol) ∆G⁰f (kJ/mol) S (J/K-mol) Carbon C2H2(g) 226.7 209.2 200.8 C2H4(g) 52.30 68.11 219.4 Hydrogen H2(g) 0 0 130.58 Oxygen O2(g) 0 0 205.0 H2O(l) -285.83 -237.13 69.91 What is the ∆S⁰ for the catalytic hydrogenation of acetylene to ethene, C2H2(g) + H2(g) → C2H4(g) inJ/K?