Consider the following CO oxidation reactions:CO OH CO HCO O CO O,22 2+→ ++→ +kk12where k1 (cm3/ gmol-s) = 1.17 ⋅ 107T (K)1.35 exp[+3000 / RuT (K)], k2 (cm3/gmol-s) = 2.50 ⋅ 1012 exp[−200,000 / RuT (K)], and Ru = 8.315 J / gmol-K. Calculate and compare the characteristic times associated with these tworeactions for T = 2000 K and P = 1 atm. The CO mole fraction is 0.011 andthe OH and O2 mole fractions are 3.68 ⋅ 10−3 and 6.43 ⋅ 10−3, respectively.

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Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.

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