Redox Reactions Question 10

Question 10 - 2024 (31 Jan Shift 2)

Given below are two statements :

Statement I: $S _8$ solid undergoes

disproportionation reaction under alkaline

conditions to form $S^{2-}$ and $S _2 O _3{ }^{2-}$

Statement II: $ClO _4^{-}$can undergo

disproportionation reaction under acidic condition.

In the light of the above statements, choose the most appropriate answer from the options given below :

(1) Statement I is correct but statement II is incorrect.

(2) Statement I is incorrect but statement II is correct

(3) Both statement I and statement II are incorrect

(4) Both statement I and statement II are correct

Show Answer

Answer (1)

Solution

$S _1: S _8+12 OH^{\ominus} \rightarrow 4 S^{2-}+2 S _2 O _3^{2-}+6 H _2 O$

$S _2: ClO _4^{\ominus}$ cannot undergo disproportionation reaction as chlorine is present in it’s highest oxidation state.