A balloon filled with helium has a volume of 1.28 x 103 L at sea level where the pressure is 0.998 atm and the temperature is 31oC. The balloon is taken to the top of a mountain where the pressure is 572 torr and the temperature is -25oC. What is the volume of the balloon at the top of the mountain?

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.

The answer to this qustion is c