2006-08-23 02:53:40 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Sulfate is normally detected by adding barium chloride, followed by HCl:
SO4^2- + Ba^2+ ---> BaSO4(s)
The solid white precipitate doesn't dissolve in acid, as would either BaCO3 or BaSO3 (also white precipitates).
I hope that helps you.
2006-08-23 13:29:40 · answer #1 · answered by Auriga 5 · 0⤊ 0⤋
It is not clear which sulphate test you mean. A common way to determine if sulphate ion is present in solution is to react it with some soluble barium salt. The equation is Ba2+ + SO4-2--> BaSO4. This reaction is also used to precipitate sulfate in quatitative analysis.
2006-08-23 13:25:52 · answer #2 · answered by Richard 7 · 0⤊ 0⤋
Add Barium salt if ppt form Sulphate presence indicates
2006-08-27 00:13:59 · answer #3 · answered by Shahid 7 · 0⤊ 0⤋