MCQ
How much % sulphur is present in organic compound if on analysis $0.53 \,gm$ of this compound gives $1.158\, gm$ of $BaS{O_4}$
- A$10\%$
- B$15\%$
- C$20\%$
- ✓$30\%$
✓
Answer
Correct option: D.
$30\%$
d
(d) Percentage of sulphur $ = \frac{{32}}{{233}} \times \frac{{{\rm{mass\, of }}\,BaS{O_4}}}{{{\rm{mass \,of \,organic\, compound}}}} \times 100$
(d) Percentage of sulphur $ = \frac{{32}}{{233}} \times \frac{{{\rm{mass\, of }}\,BaS{O_4}}}{{{\rm{mass \,of \,organic\, compound}}}} \times 100$
$ = \frac{{32}}{{233}} \times \frac{{1.158}}{{0.53}} \times 100 = 30\% $
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