Oxidation produces a gaseous state. Ruthenium is a hard, brittle, light gray polyvalent rare metal element. It is a member of the platinum group metals. It reacts with dilute sulfuric acid to produce a redox reaction. It will be oxidized to a gaseous state. It can be extracted with carbon tetrachloride and used The reducing agent reduces ruthenium to low price, and the low solubility of low price ruthenium in carbon tetrachloride is used to separate and purify ruthenium.