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Chemistry very hard take home problem please provide bolded and clear and correct anwsers thank you so much
3) (20 points total At one point Earth, iron was present mostly as iron(II), once plants had produced a significant quantity of oxygen iron became oxidized to in the atmosphere, the potentials relevant half reactions are given below, with their reduction at 25 C: Fe3+ Fe2 E 0.77 V 2H20 4 e 4 OH 0.40 V a) write the (balanced) overall reaction for the oxidation of Fe2 eac to Fe3 ea by the simultaneous reduction of O2, using the two half reactions above. (4 points) b) Show that this reaction is not spontaneous under standard c. (5 points) conditions at 25 c) Explicitly define what standard conditions mean for this particular ot words reaction-in d) Show that Fez (aa) can be spontaneously oxidized to Fes (a by ozat at 25 c assuming the following reasonable environmental conditions: lFea l [Fe l 1.0 x 10 M: pH 7.0: and 0.32 atm. (8
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3 t b) At peoeanepe met Standard con ditton At stan dard-Con di tior), ecen .. o.37 Ezene-ve ttanag.io +ve → Δ9. io + veヲnon

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