budullewraagh Posted October 5, 2004 Posted October 5, 2004 david hahn made a solution of conc nitric and sulfuric acids, added pitchblende and could not dissolve any urananite ore. in the end, nucleosynthesized uranium 233 from thorium 232, which he thermited from the dioxide. i never understood why he did a thermite; he had to go through the trouble of shoplifting and breaking open hundreds of lithium batteries to get enough lithium to reduce the thorium dioxide. if i were him i would just use electrolysis. so much easier/cheaper that way.
YT2095 Posted October 5, 2004 Posted October 5, 2004 just a little tug on the reins here... but we ARE getting a little "Off Topic"
Gilded Posted October 5, 2004 Posted October 5, 2004 No we're not, we're encouraging people not to try isolate uranium from pitchblende THROUGH the use of nitric acid. Though bud just explained an alternate way of creating fissionable material, so guess we're a little bit off topic. Offtopic PS. bud did you mean electrolysis of thorium dioxide all by itself with nothing else added? Does that even work :|
YT2095 Posted October 5, 2004 Posted October 5, 2004 it doesn`t work! you`de need the molten salt. btw, this as off topic as it gets, if you need a source of Barium or Thorium (and other goodies) the old Vacuum tubes contain MANY of these! sometimes in pure form
boris_73 Posted October 8, 2004 Author Posted October 8, 2004 could you use a ptfe tube instead of a glass tube for condensing nitic acid because i some how managed to break my glass tubes when bending them and i read that ptfe tubing is resistant to most/nearly all acids and solvents if so this would be so much more easyer and better to use as a condenser as well as putting the boiling flask in an ice bath i could also coil the tube and put that in an ice bath as well for extra cooling which would condense the fumes better
YT2095 Posted October 9, 2004 Posted October 9, 2004 I see no reason teflon can`t be used, just bear in mind that it looses a little of it`s rigidity when hot, so don`t rely on it being a structural part of your aparatus.
boris_73 Posted October 9, 2004 Author Posted October 9, 2004 does anybody know where to buy some ptfe tubing i have found one supplier in england but it means i have to buy 65ft for £17 when i only want about 5ft at the very maximum
boris_73 Posted October 9, 2004 Author Posted October 9, 2004 would diy shops and B&Q places like that sell ptfe tubing or even electrical shops, like maplin
boris_73 Posted October 10, 2004 Author Posted October 10, 2004 how can you tell if you are buying teflon tubing i went to B&Q and there were loads of different ones but i didnt know if any were teflon, and i dont what to ask because they will probably ask what is it for
YT2095 Posted October 10, 2004 Posted October 10, 2004 I personaly have never encountered teflon tubing other than the tip on a solder sucker (thats not to say it doesn`t exist somewhere!). I don`t have a clue where you`de get it from off the top of my head.
boris_73 Posted October 10, 2004 Author Posted October 10, 2004 i can get it on line from http://www.omega.co.uk but that is much to long for me
boris_73 Posted October 20, 2004 Author Posted October 20, 2004 who knows where to buy some teflon tape from in england, what shops would sell it
YT2095 Posted October 20, 2004 Posted October 20, 2004 wahey! it`s Boris long time no see dude! as for Teflon or PTFE tape, any shop that sells Plumbing or gas fitting parts will stock it
boris_73 Posted October 20, 2004 Author Posted October 20, 2004 LOL and thank you for the quick reply, ill have a look around those shops now
boris_73 Posted October 23, 2004 Author Posted October 23, 2004 yt do you think a 2mm O/D will be big enough for a condenser made out of teflon tubing if so i can get some which is 2mm O/D and 30" long
YT2095 Posted October 23, 2004 Posted October 23, 2004 no, it`s woafully inadequate a 4mm ID at minimum is best, think of the gas pressure, a 2mm OD will give what? maybe a 1mm ID? that`s asking for trouble!
boris_73 Posted October 23, 2004 Author Posted October 23, 2004 its ok about 10 min after i posted that thread i found a website thats dedicated to PTFE and i asked if they sell 7mm ID 1 meter long PTFE tubing and they do the 2mm OD tubing was of ebay so im ok now. thank you
budullewraagh Posted October 23, 2004 Posted October 23, 2004 an order containing potassium nitrate and other compounds came in a week ago. of course, i want to make a little nitric just for experience. does anybody have suggestions for materials to use for collecting the gas? i understand the process of tubes leading from one beaker to another but im not so sure as to how i could do this easily without destroying the tubing
boris_73 Posted October 23, 2004 Author Posted October 23, 2004 PTFE tubing is fine against most acids use 1* 500ml flat base boiling flask to put KNO3 and sulphuric acid in, the rubber corks are going to be coverd in teflon tubing and the reciver is going to be a 500ml conical flask, hopefull the tubing can be coilled and put it in a ice bath, the conical flask is also going to be put in an ice bath to collect the gasses put a few ml of water in the conical flask and heat the boiling flask to about 80c-90c then the fumes should condense through the tube and fall in to the conical flask any gasses that have not turned into a liquid will do so when they touch the water
boris_73 Posted October 30, 2004 Author Posted October 30, 2004 my friend say's they sell PTFE tubing at B&Q he works there but its 15mm O/D is that too big or will it be fine, they also sell PTFE tape there as well
KFC Posted August 19, 2006 Posted August 19, 2006 How do I (including the ratios) make Nitric acid out of 10G of Potassium Nitrate 10G of Sulphuric acid (16M)?
[w00t] Posted August 19, 2006 Posted August 19, 2006 clear and simple, distill.. the gas given off is run thro a tube and then HNO3 gas turns to liquid and drips down
YT2095 Posted August 19, 2006 Posted August 19, 2006 since sulphuric acid is dibasic and nitric is monobasic, and you`re effectively exchanging a group 1 metal in place of hydrogen, then 2 mols of KNO3 to 1 mol H2SO4 will be perfect.
budullewraagh Posted August 19, 2006 Posted August 19, 2006 HSO4- shouldn't be considered a strong acid by any means, espcially considering the relative weakness of HNO3 as an acid. Maybe if you have something like 1.2 equivalents of KNO3 to your 1 equivalent of H2SO4 you'll see full conversion but a 2:1 would not work.
YT2095 Posted August 19, 2006 Posted August 19, 2006 a 1:1 will leave 1 part HNO3 and 1 part KHSO4. KHSO4 is still usable again (but it`s then operating as something akin to a mono basic acid) so 1 Mol sulphuric to 2 mols KNO3 is perfect. 2KNO3 + 1H2SO4 --> 2HNO3 + 1K2SO4 Edit: (added just for the fun of it) you could get even more "Bang for you buck" using a tribasic acid like Phosphoric acid instead H3PO4, then you can use 3 parts KNO3 to 1 part Phosphoric! and if you`re REALLY clever, use ammonium nitrate instead in the correct ratio and you`ll get HNO3 and monoammonium phosphate, heat the the MAP again, the ammonia is driven off and your left with your original phosphoric acid again to re-use ) Double EDIT: I rem this Quote (and typing it): sound like you had a cool dad! I know that if ever we`re blessed with having kids' date=' they`ll have the Chemistry Set from HELL! )) Muhahahahahahaaa [/quote'] well I have a 14 month old daughter now, and she can join me in saying the first 12 elements (in order) and will often chunter away to herself the same and yes, she has all the chems she`ll ever possibly want AND books, I`ve been stocking up on each )
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