Question

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

Answer 1

Correct Answer - 6
`8MnO_(4)^(-)+3 S_(2)O_(3)^(2-)+H_(2)O overset("Faintly alkaline")(rarr) 8 MnO_(2)+6 SO_(4)^(2-) +2OH^(-)`
`:.` 8 moles `MnO_(4)^(-)` produce 6 moles `SO_(4)^(2-)`