In this qualitative experiment the researchers bring back classic precipitation chemistry on various transition metal ion solutions (Ni2+, Pb2+, Co2+) at very low concentrations. Nickel can be precipitated as a red dimethylglyoxime complex, cobalt as a reddish-brown 2-nitroso-1-naphthol complex, and lead as a yellow iodide compound. As this is a qualitative experiment color will be […]