1.0 g of H_{2}O_{2} solution (30 wt%) was titrated with 20.000 mL of KMnO_{4} solution. What is the molarity of the KMnO_{4} solution

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride