Problem 4 Construct final redox reactions using the following electron donor and acceptor pairs, and calculate the standard free energy change of the reaction (AG°') when one mole of the electron donor is oxidized. Write down the balanced half reactions and final reactions and show your calculation work. (Use the Table A1.1 attached in the end as needed. Assume pH is 7.) (Hint: use only H₂O, H, and e' to balance the half reactions.) 1) Electron donor: H₂S (→ SO42-); Electron acceptor: O₂ (→ H₂O). 2) Electron donor: Ethanol C₂H5OH (→ CO₂); Electron acceptor: NO3- (→N2).

Problem 4 Construct final redox reactions using the following electron donor and acceptor pairs, and calculate the standard free energy change of the reaction (AG°') when one mole of the electron donor is oxidized. Write down the balanced half reactions and final reactions and show your calculation work. (Use the Table A1.1 attached in the end as needed. Assume pH is 7.) (Hint: use only H₂O, H, and e' to balance the half reactions.) 1) Electron donor: H₂S (→ SO42-); Electron acceptor: O₂ (→ H₂O). 2) Electron donor: Ethanol C₂H5OH (→ CO₂); Electron acceptor: NO3- (→N2).