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  4. In sulphur estimation, 0.471 g of an organic compound gave 1.4439 g of barium sulphate. The percentage of sulphur in the compound is (Nearest Integer) (Grven: Atomic mass Ba: 137 u , S: 32 u , O: 16 u )

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Q. In sulphur estimation, $0.471 \,g$ of an organic compound gave $1.4439 \,g$ of barium sulphate. The percentage of sulphur in the compound is ___(Nearest Integer) (Grven: Atomic mass Ba: $137 \,u , S : 32\, u , O : 16 \,u$ )

JEE MainJEE Main 2023Organic Chemistry – Some Basic Principles and Techniques

Solution:

$\% \text { sulphur } =\frac{32}{233} \times \frac{\text { weight of } BaSO _4 \text { formed }}{\text { weight of organic compound }} \times 100$
$ =\frac{32}{233} \times \frac{1.4439}{0.471} \times 100$
$ =42.10$
Nearest integer 42