Redrang604 Posted December 23, 2004 Posted December 23, 2004 I have an aqueous solution containing i sulfate ions, what would be a diffinitive test for chloride ions without getting a false postive from the sulfate ions
Gilded Posted December 23, 2004 Posted December 23, 2004 http://www.gcsescience.com/f22.htm "the addition of Silver Nitrate" Hmm, interesting. I didn't know you could use AgNO3 for that sort of testing.
YT2095 Posted December 23, 2004 Posted December 23, 2004 it`s the standard reagent for Chlorine testing in any Lab
Gilded Posted December 23, 2004 Posted December 23, 2004 "it`s the standard reagent for Chlorine testing in any Lab :)" It is? How well can it detect chlorine from air?
YT2095 Posted December 23, 2004 Posted December 23, 2004 bubble some air through it, and the tiniest little molecules will turn it from Clear to instantly milky
Redrang604 Posted December 23, 2004 Author Posted December 23, 2004 unfortunately, it does the same thing when sulfates are present, which i already know are.
Gilded Posted December 23, 2004 Posted December 23, 2004 "unfortunately, it does the same thing when sulfates are present, which i already know are. :(" It does? Perhaps you could remove the sulfates somehow and then do the silver nitrate test?
Redrang604 Posted December 23, 2004 Author Posted December 23, 2004 how would i do that, as far as ive seen anything that would combine with sulfates, combine with chlorides
Nave Posted December 23, 2004 Posted December 23, 2004 Yea we check like every table and we cant find anything(that wont kill us) that we could use..
budullewraagh Posted December 24, 2004 Posted December 24, 2004 "unfortunately, it does the same thing when sulfates are present, which i already know are. :(" no, it actually doesn't. the sulfate anion is more appealing to a cation than the nitrate anion
Guest helium Posted December 30, 2004 Posted December 30, 2004 To test for chloride ions add a few drops of nitric acid, then silver nitrate, if u get a white precipitate then chloride ions are present. to test for sulphur ions you would have to add barium chloride.
budullewraagh Posted December 30, 2004 Posted December 30, 2004 add barium or a barium salt (not sulfate) to ppt the sulfate. for the chloride add silver nitrate, which will ppt the silver chloride
budullewraagh Posted December 30, 2004 Posted December 30, 2004 just a side note, silver nitrate is a good test for all halogens/halides except fluorine/fluoride
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