Which of the following compounds would give lilac flame coloration and a white precipitate with acidified barium chloride solution?

CGSVGC

1 year ago

Potassium burns with lilac flame.
In the reaction with barium chloride solution, the white precipitate formed is Barium tetraoxosulphate (VI) which is obviously insoluble in excess of the dilite acid, otherwise it won't be a precipitate.
This is a typical test for tetraoxosuphates (VI).

Fex23

3 years ago

Explanation pls

Som15432

1 year ago

The presence of lilac flame colouration indicates the presence of Potassium ion (K).
The presence of white precipitate with Barium Chloride indicates the presence of a Tetraoxosulphate ion (SO_4^2+).
Therefore the correct option would be the combination of both potassium and Tetraoxosulphate ion which can be obtained from option C (K_2SO_4) thereby making it the correct option.

Adepy

2 years ago

Explain