MCQ
Sulphur in $+3$ oxidation state is present in
- ASulphurous acid
- BPyrosulphuric acid
- ✓Dithionous acid
- DThiosulphuric acid
✓
Answer
Correct option: C.
Dithionous acid
c
(c) Dithionous acid $({H_2}{S_2}{O_4})$ has sulphur in $+3$ oxidation state.
(c) Dithionous acid $({H_2}{S_2}{O_4})$ has sulphur in $+3$ oxidation state.
$HO - \mathop {\mathop S\limits^{||} }\limits^O - \mathop {\mathop S\limits^{||} }\limits^O - OH$ ;
$2( + 1) + 2x + 4( - 2) = 0$
$2x = 8 - 2 = 6$;
$x = +3$
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