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The standard cell potential for the fuel cell 2 H2(g) + O2(g) → 2 H2O(l) is...
The standard cell potential for the fuel cell 2 H2(g) + O2(g) ⇔ 2 H2O(l) is = +1.23 V at 298 K and +1.18 at 358 K. Estimate the standard entropy change of the cell reaction.
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH3OH) as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell. (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions) (e) (4 pts) Evaluate AGº (kJ) and AE° (V)...
Calculate the standard-state entropy for the following reaction: 1 CH4(g) + 2 O2(g) ⟶ 1 CO2(g) + 2 H2O(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. Formula S∘ J/(K⋅mol) CO2(g) 214 H2O(l) 189 CH4(g) 186 O2(g) 205
Consider a fuel cell that uses the reaction 2C2 H2 (g)502 (g) -» 4CO2(g) 2H20(1) Using the standard free energies of formation, what is the value of E for the cell reaction? Substance and State AG (kJ/mol) C2H2 (g) 209.9 CO2 (g) -394.4 H2O(I) -237.2 O2(g) 0 Express your answer with the appropriate units.
Methanol, CH3OH (l), combusts according to the following equation: 2 CH3OH (l) + 3 O2 (g) → 2 CO2 (g) + 4 H2O (l) ∆rHo (298 K) = −1452 kJ Here is a list of Entropies of formation: S (J K-1 mol-1) at 298 K CH3OH (l) =126.8 O2 (g) = 205.14 CO2 (g) = 213.74 H2O = (l) 69.91 (a) If the above reaction was used in a fuel cell, say, to perform work, what will be the maximum...
P6C.2 Calculate the value of A_G®(H,0,1) at 298 K from the standard potential of the cell Pt(s)[H2(g)|HCl(aq)|O2(g)|Pt(s), El = +1.23 V.
Calculate the standard-state entropy for the following reaction: 1 Al2O3(s) + 3 H2(g) ? 2 Al(s) + 3 H2O(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. S? J/(K?mol) Al(s) 28.0 H2O(l) 189 Al2O3(s) 51.0 H2(g) 131
Calculate the standard-state entropy for the following reaction: 1 Al2O3(s) + 3 H2(g) ⟶ 2 Al(s) + 3 H2O(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. Formula S∘ J/(K⋅mol) Al(s) 28.0 H2O(l) 189 Al2O3(s) 51.0 H2(g) 131
OH + H2 → H2O + H. a. Using all columns of data provided, find ∆rxnHo at 298 K b. Find Keq at 298 K c. Using all columns of data provided, find ∆H‡ at 298 K Substance AH" (kJ/mol) AGE (kJ/mol) -228.572 Sº (J/K/mol) 188.825 -241.818 217.965 203.247 114.713 H2O (g) H(g) OH (g) H2 (g) Cpº (J/K/mol) 33.577 20.786 29.89 28.824 38.95 34.23 183.64 130.684
Calculate the standard-state entropy for the following reaction: 6 CO2(g) + 6 H2O(l) ⟶ 1 C6H12O6(s) + 6 O2(g) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. Formula S∘ J/(K⋅mol) C6H12O6(s) 212 O2(g) 205 CO2(g) 214 H2O(l) 189