Which element is oxidized and which is reduced in the

Problem 4.51Which element is oxidized and which is reduced in the following reactions(a) N 2) + 3 H (g)2 2 NH (g) 3(b) 3 Fe(NO ) (aq) + 2 Al(s) 3 Fe(s) + 2 Al(NO ) (aq) 3 2 3 2(c) Cl 2q) + 2 NaI(aq) I (aq) + 2 2Cl(aq)(d) PbS(s) + 4 H O (a2 2bSO4(s) + 4 H O(l) 2 Step-by-step solution Step 1 of 9 ^A type of chemical reaction in which electrons transfer takes place between two species iscalled an oxidation-reduction reaction. It is also called a redox reaction. In oxidation, an elementloses its electrons; whereas in reduction, elements will gain electrons. Gain of hydrogen is alsocalled reduction.In the oxidation process, the oxidation number of the element will be increased, whereas in caseof reduction, oxidation number will be decreased.