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  • In neutral or alkaline solution, oxidises thiosulphate to :Option: 1</

In neutral or alkaline solution,\mathrm{MnO_{4}^{-}} oxidises thiosulphate to :

Option: 1

\begin{aligned} &\mathrm{S}_{2} \mathrm{O}_{7}^{2-} \\ \end{aligned}


Option: 2

\mathrm{S}_{2} \mathrm{O}_{8}^{2-} \\


Option: 3

\mathrm{SO}_{3}^{2-} \\


Option: 4

\mathrm{SO}_{4}^{2-}


Answers (1)

best_answer

 In neutral or faintly alkaline solutions,

\mathrm{MnO}_{4}^{-} oxidises thiosulphate to sulphate.
8 \mathrm{MnO}_{4}^{-}+3 \mathrm{~S}_{2} \mathrm{O}_{3}^{2-}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{8\, MnO}_{2}+\mathrm{6\, SO}_{4}^{2-}+2\, \mathrm{OH}^{\Theta}
                         thiosulphate                                              sulphate

Option (4) is correct.

Posted by

HARSH KANKARIA

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