DISCUmetal (Zn, Fe or Sn) and HCl. This method is more speci NO 10 the presence of other reducible groups. This procedure also demonstrates the acid/base characteristics of the amine group during the reaction and subsequent work-up. CH3 112/2 Sn aq. HCI CH3- NH + Sn+ od PRE-LAB: In addition to the usual items, pre-lab preparation for this experiment should include the following: a) Write balanced equations for both half-reactions of the redox. Combine them to determine the overall balanced redox equation. b) Determine the limiting reagent and calculate the theoretical yield of amine