In neutral alkaline solution |dandfBlock ElementsJEEMain2022

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JEE MAIN 2022

27-07-2022 S2

Question

In neutral or alkaline solution, $\mathrm{MnO}_4^{-}$ oxidises thiosulphate to:

Select the correct option:

$\mathrm{S}_2 \mathrm{O}_7^{2-}$

$\mathrm{S}_2 \mathrm{O}_8^{2-}$

$\mathrm{SO}_3^{2-}$

$\mathrm{SO}_4^{2-}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$8 \mathrm{MnO}_4^{-}+3 \mathrm{~S}_2 \mathrm{O}_3^{2-}+\mathrm{H}_2 \mathrm{O} \xrightarrow[\text { alk. solution }]{\text { neutral or }} 8 \mathrm{MnO}_2+6 \mathrm{SO}_4^{2-}+2 \mathrm{OH}^{-}$

Question Tags

JEE Main

Chemistry

Medium

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