Sciencemadness Discussion Board

Lead Nitrate to Lead Chloride

RU_KLO - 3-12-2022 at 16:14

Hi,

I need Lead Chloride (not reagent grade, but with the less contamination as possible)

As the lead I have came from a fishing plumb and I know that it has a lot of tin, I disolved in Nitric acid. (to remove the tin - see this procees somewhere in the forum)

Currently is digesting, but in the end I will have Lead II nitrate and want to convert to Lead II Chloride.

The first though was to treat it with HCL, but then I found that it can also be precipitated with a NaCl Solution.

Pb(NO3)2(aq) + 2NaCl(aq) → PbCl2(aq) + 2NaNO3(aq)
but then how I separte PbCl2(aq) from NaNO3(aq).

from a web page it states that PbCl2 will precipitate, but why it states (aq) and not (s)?

Solubilty of PbCl2(aq) is very low (1gr/100ml) and NaNO3 is very high 92,1 g/100 ml, so precipitation at low temperatures is possible.

or maybe there is another route.

In the end I need solid PbCl2.

Thanks

DraconicAcid - 3-12-2022 at 16:23

It should be listed as a solid. Just make sure your solution is as cold as possible, and remember that some of your lead will stay in solution.

unionised - 4-12-2022 at 03:08

Quote: Originally posted by RU_KLO  


from a web page it states that PbCl2 will precipitate, but why it states (aq) and not (s)?


Thanks

It's a mistake.

yobbo II - 8-12-2022 at 17:43



http://www.sciencemadness.org/talk/viewthread.php?tid=5490

try here

Yob