Ammonium Tri Iodide

[boris_73]

how much Ammonium Tri Iodide would you get from 100g would it still be 100g

[YT2095]

100g of what?

[boris_73]

ah yes that would help sorry 100g of iodine, and dont worry i am not going to make a huge batch like that is just that i am thinking of buying some iodine 100g for £5.90

[YT2095]

well work it out

 

what`s the formula for Nitrogen Tri-iodide?

 

here`s a hint: 1 part nitrogen to 3 parts Iodine.

 

and if you have 100g of Iodine and ADD something else to it, will it weigh More or Less than 100g?

 

now, work out the weight of Nitrogen needed to use the 100g of Iodine

[boris_73]

oh right thank you

[Silencer]

Can't you get iodine crystals from the water purification systems they sell at camping stores?

 

I know one is just some little pellets that you drop in the water, but I don't know how pure the pellets are. The brand name is Potable Aqua.

 

The other is called Polar Pure. This has iodine crystals in a container. You fill the container with water and let it partially dissolve the crystals. Then you pour this water into the water you want to clean. Once that water has been cleaned you pour some back into the container to recharge it (dissolve some more of the crystals).

 

These products give you a pretty good amount of crystals/pellets and if necessary it probably isn't that hard to extract the iodine. I don't think they are particularly expensive either.

[budullewraagh]

i believe those are iodide salts, most likely potassium iodide

[Silencer]

Well I thought that KI was white, but these are the color of iodine.

[Silencer]

Lot's about NI3

http://www.chm.bris.ac.uk/motm/ni3/ni3h.htm

 

The animation of the reaction is pretty cool.

[Silencer]

These people are apparantly offering 4-8 g iodine crystals for $12, which is cheap enough to me.

 

Only ships inside US, probably due to some restrictions on chemical shipment and such.

[budullewraagh]

that isnt cheap... at all...

 

i've seen it for $20/oz and iodide salts for $5-10/oz, but that is a terrible ripoff man

[Gilded]

"http://www.chm.bris.ac.uk/motm/ni3/ni3h.htm"

 

Those people have taken the video from another site (it's definately the same vid) and transformed it into a gif. >:/ I even think it was copyrighted... Still, it's a pretty cool reaction.

[budullewraagh]

yeah it is a cool reaction. funny thing is it happens so fast you have to watch it a few times

[Gilded]

"yeah it is a cool reaction. funny thing is it happens so fast you have to watch it a few times"

 

I've seen the MOV-version, in that one you can check it frame by frame. This is also fun to do with Na + H2O or similar reactions: You can see a huge bubble of hydrogen coming out of the water and combusting in a freaking millisecond.

[Silencer]

Well, supposing you had some iodine salts, such as KI, could you get the iodine through electrolysis?

[budullewraagh]

there are two methods you would rather try:

 

1. bubbling chlorine gas into a solution of iodide salts. the more conc the solution the better your results. careful with the chlorine tho; do it outside or in a fume cupboard and try to make it so the chlorine has nowhere to go EXCEPT the solution

 

2. acidifying the iodide with (20-30%) sulfuric acid preferrably (DO NOT USE HALIDE ACIDS...unless it's HI...but not like that's happening or anything) then oxidizing your iodide to iodine by adding a strong oxidizing agent, prefferably (40-60%) hydrogen peroxide. be careful to calculate everything stoichiometrically lest you create a bunch of peroxymonosulfuric acid and burn your hands off. also, add the peroxide slowly, as doing it too quickly could cause it to blow up

[5614]

i have some potassium iodide NI.... came in one of those chem packs which was given to my brother, but ive been checking out the chemicals in there!!!! can i get iodine from the KI and how?

[Silencer]

^Look at the post directly above yours.

[budullewraagh]

yeah buddy:\

[5614]

im guessing you meant this part:

 

1. bubbling chlorine gas into a solution of iodide salts. the more conc the solution the better your results. careful with the chlorine tho; do it outside or in a fume cupboard and try to make it so the chlorine has nowhere to go EXCEPT the solution

[budullewraagh]

both work actually

[5614]

yeah, but its easier to get Cl (electrolysis of brine) than to get H2SO4

 

also, would you just get some K and some I or what?

or KCl and I or something?

[budullewraagh]

oh i agree it is easier. the reaction is: KI+Cl2 --> KCl+I2

it's just the more negatively active chlorine oxidizing the iodide anion to iodine and reducing to chloride

[Silencer]

Budullewraagh, how would you set up this reaction at home? I'm thinking that you would need a bong-like container too put the KI solution in. Would you see the top so that the gas can't escape out? What state is the KCl in? (I imaging the I2 is a precipitate).

 

edit: BTW, I hate how in school science classes you never get to do any practical experiments/procedures like this one. They all demonstrate simple things like "Mg in HCl makes H2 bubbles that will pop when you hold a burning splint near them."

[Gilded]

"I hate how in school science classes you never get to do any practical experiments/procedures like this one. They all demonstrate simple things like 'Mg in HCl makes H2 bubbles that will pop when you hold a burning splint near them.'"

 

I absolutely agree. My 7th-9th grade school didn't even have proper element samples (which is the reason I have tried to cram the RGB element collection into their budget ).