jimwig - 28-7-2004 at 11:23
posting this seperate as I didn't wanto interfer with the other lead topic ongoing.
got lots (GRANDE) lead-sulfur batteries.
they come apart rather easily, save the acid it makes good gravy. Ha
tried to melt the "lead" plates. they will not melt at the normal lower temp of "Pb".
side by side heating
I figure they must be lead sulfate ? - being no chemist I wanted to ask before trying for the next step which would be like lead nitrate or lead
acetate.
someone with hands on give me your opinion.
guy - 28-7-2004 at 11:28
It is lead oxide and lead sulfate
[Edited on 28-7-2004 by guy]
jimwig - 28-7-2004 at 11:32
so what do you suggest to "purify" the plates so as to obtain lead metal or a salt like leadnitrate?
Esplosivo - 28-7-2004 at 11:37
What is the colour of the 'lead plates'. If they are yellow or reddish they are oxides of lead, in which case you should simply add nitric
acid to them and you get your lead (II) nitrate.
If the 'lead plates' are insoluble lead sulphate, then you should react with calcium nitrate. The solution contains the lead (II) nitrate
while the ppt is calcium sulphate.
Hope that helps.
unionised - 28-7-2004 at 13:10
Calcium sulphate is rather more soluble than lead sulphate so that reaction won't work very well (if at all).
On the other hand, boiling lead sulphate with sodium carbonate solution will convert it to lead carbonate, which can be filtered off and disolved in
acetic or nitric acid.