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Author Topic: Destructive Distillation question  (Read 128 times)

superlative

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Destructive Distillation question
« on: October 07, 2009, 10:11:31 PM »
How does someone calculate the amount of PbO to GAA to produce Lead acetate insitu? with PAA?

an apprenticeship would be nice.....

have a god one, thanx for setting up a nice new hive.

sprltv

Vesp

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Re: Destructive Distillation question
« Reply #1 on: October 07, 2009, 10:39:41 PM »
Give more detail on how you think it might be done and we'll help you out more.
Got any references, Where have you heard about this?, etc..
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Sedit

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Re: Destructive Distillation question
« Reply #2 on: October 07, 2009, 10:56:26 PM »
Lead acetate molecular formula is Pb(C2H3O2)2. What one would need is a two times molar excess of GAA to PbO. I don't know if this reaction goes to completion or not so if one where to attempt that I would most certainly go for excess GAA and base the amount formed on the quantity of PbO used. Im assuming in all this you can figure out molar ratios but if not let me know.


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"thanx for setting up a nice new hive."

Thank you for compairing us to the hive and perhaps one day we will have the large amount of material and members that once was. To many materials are restricted at the moment for a place like the hive to thrive the way it did and more work has to be done with novel precursors...... Thats what we should all aim for. Welcome to the Vespiary, Think of it as amature chemistry that you can eat ;D
There once were some bees and you took all there stuff!
You pissed off the wasp now enough is enough!!!

timecube

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Re: Destructive Distillation question
« Reply #3 on: October 07, 2009, 11:00:43 PM »
I assume you are referring to this:

http://www.erowid.org/archive/rhodium/chemistry/p2p.paa-pb.html


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The lead acetate toxicity was partially solved by not using it (sorta). Instead, the PAA was mixed with an amount of glacial acetic acid calculated to yeild 4Kg of Lead acetate when mixed with the proper amount of litharge (PbO) right in the reaction vessel, just around 30 minutes prior to the run.

I imagine it just goes PbO + 2 HOAc -> Pb(OAc)2 + H20

Then just whip out your periodic table and run the math.  Any basic chemistry text will cover molar ratios and show you how to work out how much of each reactant you need to get a certain amount of product.  All of this was left out of the original write-up because it's generally considered to be assumed knowledge once you work your way up to this level of chemistry.

I hope that sent you in the right direction.

superlative

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Re: Destructive Distillation question
« Reply #4 on: October 08, 2009, 10:25:42 AM »
Thanx for a warm welcome.

Yes this was refering to the xtaldoc variation of DD with lead acetate. It is indeed as the name implies destructive. I wish i understood reaction mechanisms and calculations so i could be of any use and be creative instead of dreaming of reproductions.

TIMEC: ok,,,i whip out my periodic table...and my calculator.....and then what? <sorry what is intuitive to you is greek to me...im sure i could learn and i study hard...in the wrong places maybe...had chem in high school and university,,,cant say i learned shit...from fora however i learned a lot...but lacking fundamentals makes me wheel chaired. i dont need lectures however, but if you could tell me what subjects i should learn and understand in order to be talk and think with the grownups i will get down to it. It has been a long time dream to become a competent organic chemist...however...life keeps interfering.

thus: 1M litharge to 2M GAA to 1/4M PAA?....and why........

And how does a capillary tube prevent bumping?

thanx

sincerely yours,

chemically/mathematically retarded...i too have my genius however...hahaha

timecube

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Re: Destructive Distillation question
« Reply #5 on: October 08, 2009, 03:58:55 PM »
I'm not trying to sound like an asshole, but you really need to read through some basic chemistry books before getting involved in this kind of thing.

http://www.shodor.org/UNChem/basic/stoic/
http://www.learnchem.net/tutorials/stoich.shtml

Browse the Vespiary's member archives and you'll find a huge wealth of knowledge to get you on the right footing.
http://127.0.0.1/MembersFTP.html

And streams of air and boiling stones prevent bumping because they act like Mentos do in soda.  They provide a nucleation point where the gases that are trying to escape can start to collect together and boil on out, rather than allowing the mixture to get superheated and boil over all at once.  It works exactly the same way as seed crystals do when you're trying to crystallize something out of a solution.

superlative

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Re: Destructive Distillation question
« Reply #6 on: October 08, 2009, 05:58:28 PM »
Time; im familiar (made a few geysirs) with boilingstones and sand, but ive never heard use of capillary tubes to inhibit bumping. I will go through your links, thanx:)

POSEIDON

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Re: Destructive Distillation question
« Reply #7 on: October 09, 2009, 02:21:31 PM »
Swis look the pdf is a better way than PbO
The chemists are a strange class of mortals, impelled by an almost insane impulse to seek their pleasures amid smoke and vapour, soot and flame, poisons and poverty; yet among all these evils I seem to live so sweetly that may I die if I were to change places with the Persian king.
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