,;> >>> Hi friends
,;> >>> I need 1M sodium arsenite
,;> >>> 50ml. what is the proceture &chemicals to prepare.
,;> >>> please suggest me.
,;> >> First you need sodium arsenite, and you may have trouble
,;> >> buying it legally. The rest depends on what you will use
,;> >> the solution for. Probably, you should use distilled water.
He doesn't need sodium arsenite. The procedure we used over 60 years
ago: Arsenious oxide (available as a primary standard) dissolved in 3N
sodium hydroxide. After dilution to volume transfer to a plastic
container.
,;> >> What kind of measurement equipment you need depends on
,;> >> how exactly the composition needs to be 1 molar. Basically,
,;> >> you have to dissolve 6.5 grams of sodium arsenite in enough
,;> >> water to make a volume of 50 ml at 20 C (68 F). Adding 50
,;> >> ml of water to 6.5 g of sodium arsenite won't give a final
,;> >> volume of 50 ml. And I'm not sure that you can make a 1 M
,;> >> concentration. I haven't been able to find the solubility
,;> >> of this compound, other than general statements like "very
,;> >> soluble in water".
,;>
,;> >> Keep in mind that this is a poison. There is a risk in
,;> >> working with it. It is not recommended for the neophyte.
,;>
,;> > thanks. I am analysing sorbital. sodium arsenite not available in my
,;> > lab, Is there any other way to prepare. I need 1molar.
,;>
,;> You can buy sodium arsenite from suppliers. I found it in
,;> the Fisher Scientific catalog in various forms and degrees
,;> of purity. There are even solutions, but I didn't see a 1 M
,;> solution. Are you looking for a way to make sodium arsenite?
,;> No doubt, it can be done. But buying the compound has to
,;> be less costly.- Hide quoted text -
,;>
,;> - Show quoted text -
,;
,;my guide said me to prepare myself.