MCQ
In neutral or faintly alkaline solution, $8$ moles of permanganate anion quantitatively oxidize thiosulphate anions to produce $X$ moles of a sulphur containing product. The magnitude of $X$ is
- A$5$
- ✓$6$
- C$8$
- D$9$
✓
Answer
Correct option: B.
$6$
b
$8 MnO _4^{-}+3 S_2 O _3^{-2}+ H _2 O \rightarrow 8 MnO _2+6 SO _4^{-2}+2 OH ^{-}$
$8 MnO _4^{-}+3 S_2 O _3^{-2}+ H _2 O \rightarrow 8 MnO _2+6 SO _4^{-2}+2 OH ^{-}$
$\therefore$ Mole of $SO _4^{2-}$ formed from $8$ moles of $MnO _4^{-}=6$
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