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.
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Answer:
Correct Answer: B
Solution:
[b] $ \underset{( Disproportionation )}{\mathop{Na_2S_2O_3}}+2HCl\xrightarrow{{}} $ $ 2NaCl+SO_2+S+H_2O $