where to buy sulfur? make sulfuric acid?

[jordehwa]

i need some sulfur to make some black powder. is there a store i can buy some at besides the internet?

 

and also if i burn sulfur it will decompose to sulfur dioxide and then i could bubble that through water to make sulfuric acid right?

[Mad Scientist]

Why would you want to make Sulphuric acid in the first place?

[jordehwa]

because i like to make my own chemicals. made it other ways i just wanted to know if i could make it this way.

[insane_alien]

Why would you want to make Sulphuric acid in the first place?

 

because its an interesting reaction pathway and is a pretty common one. what more is needed other than the desire?

 

To jordehwa, you cannot just bubble sulphur dioxide through water to make sulphuric acid, you will make sulphurous acid but not sulphuric acid.

 

To make sulphuric acid you first need to convert the SO2 into SO3. this can be done by reacting SO2 with O2 in the presence of a V2O5 catalyst.

 

There are various ways to get the SO3 to H2SO4, you can either bubble it through already concentrated sulphuric acid to form oleum and then add more water to break it down or you can hydrate it in the vapour phase and then condense it.

 

Alternatively, you could bubble the SO2 through hydrogen peroxide. although i don't think the yeild is as good on that and it will have a sulphurous acid impurity.

[jordehwa]

thanks insane-alien your cool.

[ronnieb997]

how do I mix sulferic acid with water for led acid batteries ?

[jordehwa]

just remember to always add the acid to the water slowly cuz it will get really hot if you do it to fast and the thermal shock might break the glass.

[Ladeira]

because its an interesting reaction pathway and is a pretty common one. what more is needed other than the desire?

 

that was the best thing I've read till date... nothing more than desire!

 

btw, i'm also going to try something like that.. i'll try the peroxide first as it's easier, then i just titrate everything at college.