Calculate the equilibrium constant for each of the reactions at 25 _c.
2fe3+(aq)+3sn(s)_2fe(s)+3sn2+(aq) o2(g)+2h2o(l)+2cu(s)_4oh_(aq)+2cu2+ (aq)

For 2Fe3+(aq)+3Sn(s)_2Fe(s)+3Sn2+(aq), the correct answer is -60 kJ. For O2(g)+2H2O(l)+2Cu(s)_4OH_(aq)+2Cu2+(aq), the correct answer is -20 kJ. These are the equilibrium constant for each of the reactions. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help. 

Ithink that’s it’s b