An acid-base indicator is used in what type of reaction?
a. neutralization
b. combination
c. decomposition
d. combustion

The answer would be A. neutralization because it is between and acid and a base. In a decomposition, you are tearing apart the already formed product. In a combustion you always get water and carbon dioxide as your products and in a combination you are not using both acids and bases.

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.