Tetraoxosulphate (VI) ions are final test using ____________
A. Acidified silver nitrate B. Acidified barium chloride C. Lime water D. Dilute hydrochloric acid E. Acidified had nitrate
Correct Answer: B
Explanation
To test for soluble \(SO _{4}^{2-}\) dilute \(HCl\) and barium chloride \(\left( BaCl _{2}\right)\) solution is added to the \(SO _{4}^{2-}\). (Barium nitrate solution and nitric acid can also be used). A white precipitate of barium sulphate is formed which is insoluble in excess acid \(BaCl _{2( aq )}+ SO _{4(\text { aq) }}^{2-} \rightarrow BaSO _{4( s )}+2 C _{(\text {aq) }}^{-}\)