jsatan

Freezing is much easier if you use a flexible plastic cup and wait a few days so it is completely solid then use an eye dropper to take the liquid off the top. You can then thaw the large chunk and refreeze it multiple time. Then do the same in a smaller cup with all the H2O2 you collected. The key is patience.

Yeah I had a small amount in a deep freezer for about 2 hrs or so.

Funny thing happened when I first checked up on it, I opened the lid and the liquid was clear and still liquid.

Right in front of my eyes it turned to ice.

Then slowly turned back to liquid. lol.

Fun fun.

Cheers for that, I think I'm all set.

I just wanted to get the % up from 3% to around 15%.

Whats this talking about?

it says adding KNO3 to Sul acid give nitric acid and precipitate of potassium bisulfate.

So I dont need to collected the gas?

Whats about with the HCl will that require collecting, lol.

Edit: Hummm no one said anything about boiling...

I've got some hydrogen peroxide, I'm collected the O2 that came off.

From this I think it is around 3-4%

It only cost me £1 for 2li so Its ok ish....

Anyway, I remember bud (the avatar with the sanata hat on from NY I think) saying That to remove the water you just freeze it.

Water FP: 0c

H2O2 FP :-10c

Well I tried this, as its such a low % it wasnt easy.

I got a syringe filled it with peroxide and stuck it in the freezer.

When it was hard it was like slush.

Well I pressed the syringe to push the peroxide out of the ice.

This worked in a way.

I tested this on a silver plate and watched how fast the blubbles formed along side a drop straight from the bottle.

My drop was faster.

But my question is, is there a better way to do this?

PS anyone else wanting some cheep and nasty peroxide, goto your local pound shop (many names).

1.89li for 99p.

Not too bad if you have got any.

Yeah google will help no end on this.

LOL. good luck then' date=' I have that Magnesium casting that I spoke of on the fone to you, I`ll be using that instead of the Magnallium next time

 

as for the fuel cell, isn`t a Hydroxide used? either a Sodium or potassium as the medium? or is that a different type of fuel cell altogether?[/quote']

Yeah you're spot on.

I was going to use methanol but that will kill the Hydroxide over time.

Ethanol doesnt seem to bother it too much.

I built it using some plastic (from a sign) and used super glue (only thing I had at the time) added some tubes from a fuel tank.

It weight nothing but lite the led easy. It was going for about 3 days until the plastic gave way and leaked onto the table taking the surface off with it, lol.

 

But it was fun, just never got around to doing it again as I was running low on KOH at the time.

But now I've got some NaOH I'm happy,

I'll retry it in a week or so. lol.

 

150ml of ethanol will go for along time,

I tried the phos acid, this gave such a small amount of HCl.

I use 20ml of phos acid (89%) and table salt.

This gave almost nothing.

It did give some gas, I take it that bleach smell is the HCl.

The phos acid didnt seem to do anything with the KNO3.

I've now got my sulfuric acid, but this too never seemed to give off any brown gas. Any ideas?

How much sulfuric acid will I need to make an average strength Nitric acid?

Hope that isnt just a gumble of words, .

This only happens' date=' when you actually burn barium metal in air, or when it is oxidized slowly by oxygen from air. Heating already-formed BaO in air is very unlikely to form BaO2.

 

 

This will be quite hard in the dry way. A very tedious and long way would be to go over the wet way, dissolving it in acid, purifying a calcium salt by fractional crystallizing, precipitating CaCO3 and then heating again. A better and cheaper way probably is to go to a drugstore and buy some pure calcium carbonate and heat that.[/quote']

I dont mind wetting it and reheating (charcoals cheep when summer is over, lol 40p for 5kg bag, )

I dont mind doing it, I can buy it but I find making it more fun.

Dont we all?

Thanks YT.

I'll know when I get back if phos acid will work to make nitric acid,

(That is if my bat has arrived which is coming from a friends back yard)

Yeah I wasnt going for any high concs. Just I'm not too good at working % to PH.

??? I was under the idea that you needed some acid like based like plastic for that.

And the you needed platinum or palladium.

But if you can use pvc I'm all ears, I've been wanting to built my self a battery that runs off yeast and sugar but the membran is too much (£££).

I did make a batt that ran off beer, lol.

But it dropped apart, the chems ate the plastic,

But I will be remaking that and entering the led bat compo, (YT I'm coming for you 5 day belt, ).

if it`s for the H and O2 electrolysis' date=' the lead ions wont have any real effect, maybe make your electrodes look a bit odd, but that`s about it

ya need a place that services Forklift Trucks, they get through batteries all the while, and will sell you a gallon of it for a couple of quid, IF you present yourself correctly and have a good "Cover Story" [/quote']

 

lol, good idea,

I'm wanting to make nitric acid and hydrochloric acid.

(which is why I've replyed to the old thread).

1hr never lasts long on these library comps, )

If you really want to make it then you could:

2NaCl + H2SO4 -> Na2SO4 + 2HCl

 

NaCl + H2SO4 -> NaHSO4 + HCl

 

If you don't have sulfuric acid you can use conc. phosporic acid!

 

NaCl + H3PO4 -> NaH2PO4 + HCl

 

2NaCl + H3PO4 -> Na2HPO4 + 2HCl

 

3NaCl + H3PO4 -> Na3PO4 + 3HCl

Poop I didnt spot this!!!

I've got about 2li of strong phos acid.

Would adding KNO3 to this work the same???

Edit:

YT you seem to make your own most of the time.

What PH do you get your too?

I've got a PH prob with digi read out (more hydroponics stuff).

Does it take along time?

Does it fizz really fast when you add the solid (NaCl or KNO3) to the sulfuric acid?

Just thinking how fast I have to be getting the solids in the liquid and capping it.

remember to do you best to charge the batt 1`st, the acid is much cleaner and stronger that way, and if you can, leave it to stand in a plastic pop bottle for a few days too, you`de be surprised just how much crap actualy settles

Yeah I was thinking abut that, gotta get my self a charger,

I'm not bothered about the "crap" in the the acid as I'll be wanting the gas off it, would this be effected?

I've been looking all over at the Car shops for a bottle of the stuff, but all I find is over prices water, lol.

Dont you just love it,

But until I place my order for other chems I'm happy to make do with this, if the gas is still the same.

Some peroxide is ment to be formed, hummm...

http://www.webelements.com/webelements/elements/text/Ba/chem.html

Anyway, any ideas on cleaning the Calcium oxide?

Normally I don't like to give sources of chems' date=' but giving a source for silver metal is not too hefty I think .

 

You can get very pure silver (99.95+%) at www.emovendo.net at a price of $13 per 30 grams. Shipping worldwide is another $3 or so. If you combine orders from this company, then shipping almost can be neglected. This is a very nice source of very pure silver.

Thanks for the link.

This sunday just gone I went to the carboot, (big one here).

And picked up a load of scrap silver (about 1oz at least). old lockets snapped chains etc etc.

Only spent £3.

Bargin

But I'm waiting for an old Car bat (should of been this morning) to make some nitric acid,

fun fun fun.

I month ago or so I was cooking some Calcium carbonate to make calcium oxide, I was thinking is there a eay way to purify this?

Because I've I've been using everyday limestone (thank council workers ) I'm happy to grind up the Oxide then do what ever using water etc then re-cook it again.

While Im on the subject of cooking,

A while ago I was thikning about cooking Barium carbonate, this needs about 1300C, as far as I know this will break down to Barium peroxide, can anyone confirm this?

I can cook this easy (new and improved charcoal cooker, even clay gets melted, lol. )

Anyway I'll be back in a day to read (grrr library comps, lol. )

Its just like biting wood lolly sticks with me, oowwww, yuk!!

I know this is an old thread.

My question is when silver nitrate is hit by light it turns dark due to the impurities.

If this is a liquid soln then how would you get it back to white from black(grey ish)?

Edit, also when you add you copper to get the pure silver out does the silver just drop off? Because I thought it would plate the copper, not that silver plated copper isnt nice (roll up, roll up, get your best silver rings right here, lol )

I take it would make crystals which would be easy to remove?

Cheers for that,

O well it was worth trying, lol..

Hi, I've got some Sodium percarbonate (oxy plus cleaner, you know the stuff).

It was so slow to give off any oxygen at all.

So I did some reading in the time I could and its like H2O2.

So I think I'll try the same thing you do to get the O2 out of the the peroxide.

I added some manganese dioxide (back stuff in batteries) and this worked pretty good.

But I only got about 1 balloon full of gas from about 30g (2 scoops) of the sodium percarbonate.

And I'm not to sure on how pure this is.

Its higher then nomal air but not That high as H2O2 will give you.

So to cut to the point, is there a better way to get the O2 out?

Yeah I alway watch out when I've got sulpher and ATES. etc, but it was good anyway.

It was the weed killer from wilkos, I know they put some other stuff in it to stop people making what ever out of it,

But it was fun to try.

Yeah I stopped trying after getting a bad headache 3 times in a row.

I think I was getting phosphine or something.

I know I'm not trying again.

I'd did it again.

I powdered the Calcium chloride Then added the copper sulphate.

This turned yellow.

I added a little water and it was a yellow green.

Add more water and it turns blue.

add more Calcium chloride and it turns yellow again, lol.

So you can see the fight between the copper and calcium for the water.

Yeah I'll post some more examples of little things I've noticed.

The first thing I ever noticed was years ago when I was about 9 ish.

I got some red salt like stuff and added water.

I noticed when this was heated it turned blue and when cooled turn back to red.

I think this was Calcium colbolt of something,(long time).

I later read this in a book about 6 years later. Thats the best part reading something you found out on your own..

Copper sulfate and calcium chloride indeed can give rise to a yellow compound.

 

The mechanism might be as follows:

Copper chloride is formed from the chloride and copper ions in the mix (e.g. because small amounts of water are present and some CaCl2 dissolves).

The copper chloride looses all its water of crystallization. This is taken op by the calcium chloride.

Anhydrous copper (II) chloride is yellow/brown.

 

When the stuff is allowed to stand in contact with air' date=' then moisture is absorbed and the copper (II) chloride is hydrated and the color changes from yellow/brown to cyan/blue.

 

BTW, this is a very good observation. Nice that you notice these details and do not simply neglect them.[/quote']

yeah I alway notice the little things, I'll have to try this again but bigger amounts and see what else I can do.

I've got some KOH as well, you get it from the hydroponics shop.

Just to add to the colours etc, I mixed sodium chlorate with copper sulphate and sugar and that was a great blue flame, it even had a 2 tone effect on the top of the flame, must try.