Can someonethe freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude), it is easier for water molecules to escape from liquid into the air. so in a high altitude city, such as houston, tx, a. will boil at the same temperature b. will not boil c. will boil at a higher temperature d. will boil at a lower temperature

The answer is 
C. Will boil at a higher temperature
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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.