The addition of an oxidizing agent such as chlorine water to a clear solution?

of an unknown compound results in the apprearnce of a brown color. When this solution is shaken with the organic solvent, methylene dichloride, the organic soolvent layer turns purple. The unknown compund probably contains....





K+


Br-


NO3-


I-


Co+2The addition of an oxidizing agent such as chlorine water to a clear solution?
Chlorine water can oxidize both Br- and I- to Br2 and I2 respectively.





Both are soluble in chlorinated organic solvents such as methylene dichloride, chloroform, or carbon tetrachloride. Br2 will give a brown colour and I2 will give a purple colour.