Question

When a neutral or slightly alkaline solution of thiosulphate is treated with the $\left[Ni\right({en}_3\left)\right]{({NO}_3)}_2$ complex, then?

• A. Green precipitate is obtained
• B. Brown precipitate is obtained
• C. Violet precipitate is obtained
• D. Yellow precipitate is obtained

Answer 1

The correct option is A Green precipitate is obtained

$\left[Ni\right(en{)}_3\left(N{O}_3{)}_2\stackrel{S_2{O}_3^{-2}}{\to }\right[Ni\left(en{)}_3\right]S_2{O}_3$ .

Green precipitate is obtained .