A transition metal compound contains a cobalt ion, chloride ions,and water molecules. The H2O molecules are the ligandsin the complex ion and the Cl ‾ ions are the counterions. A0.256 g sample of the compound was dissolved in water, and excesssilver nitrate was added. The silver chloride was filtered, dried,and weighed, and it had a mass of 0.308 g. A second sample of 0.416g of the compound was dissolved in water, and an excess of sodium hydroxide was added. The hydroxide salt was filtered and heated ina flame, forming cobalt(III) oxide. The mass of cobalt(III) oxideformed was 0.145 g.
1.) What is the oxidation state of cobalt in the complex ion?
2.) What is the formula of the compound?