YayaM4690 YayaM4690
  • 01-11-2018
  • Chemistry
contestada

How would you test for so4 2- in an aqueous solution?

Respuesta :

BarrettArcher BarrettArcher
  • 10-11-2018

Answer :

The test for [tex]SO^{2-}_4[/tex] ion :

Procedure :

1) In a test tube, add 5-10 drops of aqueous solution of [tex]SO^{2-}_4[/tex].

2) Add 1-2 ml of HCl solution and Barium chloride solution in the test tube.

The formation of white precipitate indicates the presence of [tex]SO^{2-}_4[/tex] ion.

The chemical reaction is,

[tex]BaCl_2(aq)+SO^{2-}_4(aq)\rightarrow BaSO_4(aq)[/tex]

The White precipitate of [tex]BaSo_4[/tex] formed in this reaction.

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