JEE MAIN - Chemistry (2022 - 27th July Evening Shift - No. 6)
In neutral or alkaline solution, $$\mathrm{MnO}_{4}^{-}$$ oxidises thiosulphate to :
$$\mathrm{S}_{2} \mathrm{O}_{7}^{2-}$$
$$\mathrm{S}_{2} \mathrm{O}_{8}^{2-}$$
$$\mathrm{SO}_{3}^{2-}$$
$$\mathrm{SO}_{4}^{2-}$$
Explanation
$8 \mathrm{MnO}_{4}^{-}+3 \mathrm{~S}_{2} \mathrm{O}_{3}^{2-}+ \mathrm{H}_{2} \mathrm{O}\rightarrow 8 \mathrm{MnO}_{2}+6 \mathrm{SO}_{4}^{2-}+$ $2 \mathrm{OH}^{-}$
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