arthur kierski
Well-known member
when evaporating a rhodium sulphate solution for measuring its volume,sometimes a yellow precipitate is formed--- I always thought that it was lead sulphate---but a friend in the forum,comented that lead sulphate is a white powder--i made a quick research and found that lead oxide is a yellow powder----when my rh sulphate solution forms this yellow powder,the quality of the plating sollution is bad---my question is :could a sulphate solution contaminated with lead be purified by evaporating the solution and then precipitating the yellow powder(pbo?) out? i know ,as an example,that lead cchloride is eliminated by hot water -----thanks for any coments---regards to all--------------------------------------------------------------------------------------------------------------------------------------------------------------Arthur Kierski