[VanNistelrooy]

I have an aqueous solution containing sulfate ions, what would be a diffinitive test for chloride ions without getting a false postive from the sulfate ions?
Plz help..

[kevins]

Test the sample with acidified silver nitrate. A white ppt of silver chloride is form. The silver sulphate is soluble.

You may use an ion chromatography with conductivity detector and a mixture of sodium carbonate and sodium bicarbonate with suitable resin column to quantify the chloride and sulphate.