Question

Acidified solutions of sodium thiosulphate are unstable because in thiosulphate

• A. the two sulphur atoms are at unstable oxidation state of $+2$
• B. the two sulphur atoms are at different oxidation state of $+6$ and $-2$
• C. the $S - S$ bonds are unstable
• D. thio compounds contain $S$ in oxidation state of zero.

Answer 1

Answer: (B)

Acidified solution of sodium thiosulphate $\left( Na _{2} S _{2} O _{3}\right)$ is unstable because in thiosulphate two sulphur atoms are in different oxidation state of $+6$ and $-2$ .