Ilja

It does end , it just expands. Its a matter of fact that the planets are moving away from each other and so does the space!

jdurg:

 

"You need to liquify a LARGE amount of air to get any type of visible amount of Xe or Kr. Once everything is liquified' date=' you would have to remove all of the nitrogen, oxygen, carbon dioxide, neon, helium, and argon from the air. It is simply not possible to do this in one's own home as the sheer size of the equipment you would need to do this is bigger than most people's homes."

 

I was worried about this, but I think I can solve it by engineering something of relatively small volume that can suck up air and allow me to rerelease the stuff I don't want while keeping the stuff I do. I call it, "the ultimate cooler." My only problem there, from a chemistry persective, is overlapping boiling points.

 

Do you have any suggestions on where the best place would be to find xenon and krypton? I mean, radon (which I don't want to use for obvious reasons) has notoriety for collecting in basements. Anything like that? I've been looking for information on this but I'm pretty much internet illiterate anymore and I'm on dialup.

 

insane_alien:

 

"you could always buy a canister of xenon and freeze it."

 

Where's the fun in that? Actually I had no idea it would be commercially available in elemental form. I'm bumping around looking for some now. Hopefully it's not too expensive because I'm basically a fringe homeless science student.

 

"(i assume you have the equipment and know-how to achieve these cold temps)"

 

Nope, but my personal hero is a physics teacher at WSU that does superconductor research with liquid Helium. He built all of his equipment from spare parts around the university and a few hundred bucks in the 70s. I have the concepts down, so hopefully I can engineer something myself.

 

Thank you to you both for your input.[/quote']

 

You can liquifiy air in fractions so you won't need to remove all the things you don't need.Like Carbon-dioxide will be liquid first and so on...

Some of them contain Kaliumperchlorate (most likley rockets not airplanes) which produces i think KCl and Oxygen not sure though

To your third question:

You mean a reaction of ethanol with the acetylic acid that accure when u oxidise it ?

I dont think there will be one , maybe there could be one if u work with conentrate H2SO4 as catalyst.Because you can also oxidise Ethanol in appearence of OH- , and if u want to create ethyl ethanoate ester you will need an acidic medium with concentrate H2SO4 which will also bind the resulting h2o of the reaction of ethanol with acetylic acid.

By the way you can make Propanoic acid like this => C2H4 + CO + H2

The reason why the glycerin catchs fire is that at some point the glycerin forms some product (Acrolein dont know the english word for it maybe its the same ) , an unsaturated carbon-hydrogen compound which starts to burn, actually thats what i think im not sure though.

hope i could help you abit

Hey ive posted a few times so far without having introduced myself , think it the right time for it now

Im ilja , 17 and im from germany.

please excuse my poor english , i try my best though

Cr2O7 is a complex which is negativly charged but the chrome ion itself is positivley charged . If you count the oxidsining value you will know why the complex is negativley charged.

Cr(+6) *2 = +12

O(-2) *7 = -14 => if you count the charges you will get the -2 , although chrome is still positivley charged.

(hope i got your question right)

thank you jdurg...my repertoire is increasing thanks to this forum.

 

Ilja' date=' one of my students once left the top off a reagent bottle with butyric acid in it. We got complaints from classes next to us and above us.[/quote']

 

 

 

haha

the pKa doesnt really equal the pH but you can caclutate using these formulas

pH = -lg c(H+) ; ka = -lgpKa

H+ = (ka*ca)^1/2 ca=concentration acid

Try to solve it in Ethanol (C2H5OH) i think it will work better than if u do it with water.

Bad ones:

C4H9 COOH <= smells like an old dirty billy goat

Butyric acid also smells terrbile

Good ones :

Benzoeacid

Benzene

Nope its very hardly soluble.if u heat it it might solve , but you will need more than only the human body heat.

Try it u'll see

well, as yggdrasil said, there are many types of catalysts, but one example is in the formation of NH3 from N2 and H2. The catalyst used is platinum and rhodium. The catalyst in this instance causes the N2 and H2 to bind to it, weakening the bonds in each molecule. This either lowers the energy required to separate individual atoms or separates them entirely. The highly reactive H and N atoms are then form NH3 which leaves the catalyst.

That's not quite right.You need in many reactions precious metals to adsorb the H2 on their surface , but in this reaction (haber-bosch-synthese) you need a ironoxide-cat. (Fe2O3 mixed up with some other Oxides like Al2O3 ,CaO etc.)

Just to get you right

you could extract it by an electrolysis but u will need a special kathode , which is made out of quicksilver , because of the electrochemical series.

There you go :

X+Y => XY without cat.

X+Y+K => (X+K)aktivated condition +Y => XK+Ytemporary condition

XK+Y=> (XK+Y)aktivated condition => XY+K

The cat. makes some kind of temporary compound which is combined wid a lower energy that is needed to built it.Then the direct reaction of X and Y.

The compound XK reacts immediately under less activation energy with Y.

The temporary compound can be a real chemical compound.

By the way manganese dioxide reacts with hydrogen peroxide (redox-reaction)

If u use NaOH u will get solid soap and KOH is used for liquid soap

Hg(I)Cl is not toxic , because its not solvable in the human body.

By the way hey i got a clue for you , if u wanna pass a school day just take a few glups of dilutted KMnO4 and u will puke like a drunkard

If u think of the brain u think , in my opinion , ( i dont know how u think about it) in the biological way (biological processes or whatever).But if u imagine that the brain is only a cluster of atoms , i wonder how millions of atoms can produce thoughts and dreams for example ?

I'd appreciate your opinions.

(sorry for my poor english)

Ilja