Question

Which of the following compound is formed when Sodium thiosulphate reacts with some strong oxidizing agents: (i.e.,dichromate solution)

• A. Only sulphate ions
• B. Only colloidal sulphur.
• C. $S{O}_4^{2-}$ and colloidal sulphur
• D. $N{a}_2{S}_4{O}_6$

Answer 1

The correct option is C $S{O}_4^{2-}$ and colloidal sulphur

Sodium thiosulphate gets oxidised to $S{O}_4^{2-}$ and colloidal sulphur [$S_4{O}_6^{2-}$ is formed].
$[S{O}_4^{2-}+S^{2-}]$