
Originally Posted by
james2409
ok, so this is all about a silver nitrate titration to determine cyanide.
5g of sodium cyanide is weighed out. This is put into a 250 ml volumetric flask with 85 ml calcium nitrate and topped up with deionized water. this is left to settle for 30 minutes. then its filtered.
25 ml is then measured into a flask along with 75 ml of water, this is then titrated to find cyanide and cyanate concentrations.
my quest is, what is the calcium nitrate used for in this method?
thanks for any help you can provide
Edit: Also, is there anything in this reaction other than cyanide that would react with NaClO?