Fuel cells with molten alkali metal carbonates as electrolytes can use methane as a fuel. The methane is first converted into hydrogen in a two-step process: CH4(g) + H₂O(g) →CO(g) + 3 H₂(g) CO(g) + H₂O(g) → H₂(g) + CO₂(g) a. Assign oxidation numbers to carbon and hydrogen in the reactants and products. b. Using the standard free energy of formation values in Table A4.3 in Appendix 4, calculate the standard free-energy changes in the two reactions and the overall AG for the formation of H₂ + CO₂ from methane and steam.
Fuel cells with molten alkali metal carbonates as electrolytes can use methane as a fuel. The methane is first converted into hydrogen in a two-step process: CH4(g) + H₂O(g) →CO(g) + 3 H₂(g) CO(g) + H₂O(g) → H₂(g) + CO₂(g) a. Assign oxidation numbers to carbon and hydrogen in the reactants and products. b. Using the standard free energy of formation values in Table A4.3 in Appendix 4, calculate the standard free-energy changes in the two reactions and the overall AG for the formation of H₂ + CO₂ from methane and steam.
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 83E: Consider a concentration cell that has both electrodes made of some metal M. Solution A in one...
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