S Block Elements Question 136

Question: Acidified solution of sodium thiosulphate is unstable because in thiosulphate

Options:

A) the sulphur atoms are at unstable oxidation state of $ +2 $

B) the two sulphur atoms are at different oxidation states of $ +6 $ and $ -2 $

C) the $ S-S $ bond are unstable bonds.

D) sulphur is in zero oxidation state.

Show Answer

Answer:

Correct Answer: B

Solution:

[b] $ \underset{( Disproportionation )}{\mathop{Na_2S_2O_3}}+2HCl\xrightarrow{{}} $ $ 2NaCl+SO_2+S+H_2O $