1. The element bromine was first prepared by oxidation of aqueous potassium bromide with solid manganese(IV) oxide. Write a balanced net ionic equation for the reaction in aqueous acidic solution. (Mn2+ is also formed)

2. The first preparation of chlorine was similar to the synthesis of elemental bromine (Problem no.1). A later method entailed the reaction of hydrogen chlorine and oxygen at 400 celcius. Write a balanced equation for the reaction. (Water is also formed)