The Home Scientist 020 - Isolating Bromine

Isolating elemental bromine from sodium bromide, sold as bromine base in pool and spa supply stores.

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[madjimms]

Can you bear my children?

[TheHomeScientist]

@madjimms

Sorry. I'm a guy.

[megamarko94]

Why did you stop making videos

[TheHomeScientist]

@megamarko94

I haven't. I've simply put them on hold while I work on several projects that are high priority right now.

[FortNikitaBullion]

Can you do this for chlorine as well, or is it just bromine and iodine?

[TheHomeScientist]

@FortNikitaBullion

Just bromine and iodine. There are cheaper, better ways to produce chlorine gas.

[UC235]

2Br- --> Br2 + 2e-

H2O2 + 2H+ + 2e- --> 2H2O

Without a stoichiometric amount of acid, the reaction will not go to completion. It does not appear that you used enough HCl from the video. Others have had near theoretical yields of bromine when using a slight excess of acid.

[HazMatLabz]

Just wondering, is the aerial concentration of bromine from this reaction dangerous; chronically or acutely?

[MegaChemboy]

get your bromide salt, add just enough hydrogen peroxide to dissolve it, then add concentrated 98% sulphuric acid dropwise, in an ice bath, add ( by volume) aproximatly half the amount of bromide you used in sodium thiosulphate to clean to solution, then pipete out the bromine on the bottem of the vessel, all appuratus must be glass, the experement is life-threatining, attempt at your own risk, store the bromine in a flame-sealed glass vessel, a pipete for small amounts, a test-tube for large.

[nickbhalo]

I think the problem is too much water. You dissolved the sodium bromide in water, added hydrochloric acid, which is typically 64% water, and drugstore hydrogen peroxide which is 97% water. Also, bromine is a liquid, not like solid iodine, so the bromine was dissolved in the water.

[darrinr769]

@TheHomeScientist YOUR A BOSS BRO!

[Digadogup]

@TheHomeScientist

is there any way to concentrate H2O2?

to increase reaction speed

[njx8]

Wow pro

[spotlightman1234]

@TheHomeScientist you would have to use Hydrofluoric acid also right?

[AlChemicalLife]

can i use 30% hydrogen peroxide cause that seem like it would work better cause it is stronger then 3% and should give better bromine

[ubuntupokemoninc]

How do i make hydrocloric acid?