Sciencemadness Discussion Board

How to make and dry Pb(II)acetate

Fashist - 19-7-2007 at 05:39

How to make and dry Pb(II)acetate?
this is difficult to dry it.

Fleaker - 19-7-2007 at 10:30

There are threads already on this.

Dissolving litharge (lead (II) oxide) in acetic acid and then recrystallizing multiple times will yield your lead acetate.

Then you have the trihydrate, which could likely be dehydrated by keeping it in a desiccator over a strong dehydrating agent. H2SO4, P2O5, Mg(ClO4)2 would do the trick, however it won't be the trihydrate form.

Fashist - 20-7-2007 at 10:45

Quote:
Originally posted by Fleaker
There are threads already on this.

Dissolving litharge (lead (II) oxide) in acetic acid and then recrystallizing multiple times will yield your lead acetate.

Then you have the trihydrate, which could likely be dehydrated by keeping it in a desiccator over a strong dehydrating agent. H2SO4, P2O5, Mg(ClO4)2 would do the trick, however it won't be the trihydrate form.


There is no way?
after dehydrating what we will have?

Fleaker - 20-7-2007 at 16:18

I'm guessing the anhydrous form of the salt.

You can dissolve lead in acetic acid too, but vinegar doesn't really do the trick unless you're into waiting months...

Lead Acetate

MadHatter - 20-7-2007 at 20:34

Another route is neutralize copper carbonate, from a pottery store, with vinegar until
all the fizzing stops. Then throw in some #9 lead bird shot and let it sit. Eventually,
the lead will displace the copper and you'll have your lead acetate. Be warned this
takes a long time but it's another method to think about.

YT2095 - 21-7-2007 at 01:42

could you put 2 lead plates in the vinegar and pass a current through them?
that may speed things up a little.

Tsjerk - 21-7-2007 at 04:05

Just add some H2O2 to lead and 30%ish acetic acid and heat a little bit. The lead will dissolve in about an hour.

YT2095 - 21-7-2007 at 04:34

and IIRC, lead acetate is Efflorescent anyway, drying it isn`t a problem, it will do that on its own.

not_important - 21-7-2007 at 06:38

I don't think it loses all the water though. Also, if done by leaving the acetate exposed to air some lead carbonates and basic acetates will be formed.

Note that lead acetate solutions will dissolve PbO. You need an excess of acetic acid in the solution you crystalise the lead acetate from.

Fashist - 21-7-2007 at 07:03

I need just Pb(II)acetata*3h2o no dry!
you will have lot of water after adding litharge to acetic acid
pbo+acetic acid->pb(II)acetate+H2o
i think the problem is water.