Module 1 PRACTICE QUESTIONS 1) For each of the following, identify which substance is undergoing reduction and which is undergoing oxidation (hint: look at the half-reactions) (3) a) 4 Fe(s) +3 03(g) 2 Fe203(S) b) Nio(s) + H2(g) Ni(s) + H20(1) c) Fe2O3(S) + 3 CO(g) 2 Fe(s) + 3 CO2(g) 2) What is a reducing agent? Circle the reducing agent for each reaction in question #1. (4)