Part III. Acetic acid is a weak acid and establishes the following equilibrium in water: HC2H3O2(aq) + H2O(l) H3O+(aq) + C2H3O2-(aq). In Part III, the methyl orange indicator is used to monitor the equilibrium shifts of the acetic acid/acetate ion system. The methyl orange equilibrium established with water is Hmo(aq)(orange-red) + H2O(l) H3O+(aq) + mo-(aq)(yellow). You compared the color of the solutions in three test tubes that initially contained 3 mL of 0.1 M acetic acid and a few drops of methyl orange indicator. In the first test tube, you added 1.0 M NaC2H3O2 drop wise. What color change was observed and what did this color change indicate about the shift in the methyl orange equilibrium?