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KVPY2020ChemistrySome Basic Concepts of Chemistry

0 . 102   g of an organic compound X was oxidized with fuming nitric acid. The resulting solution, after reaction with an excess of aqueous BaCl 2 , produced 0 . 233   g of BaSO 4 as a precipitate. Compound X is likely to be : [Given: Atomic wt. of Ba = 137 ]

Correct answer

3

Step-by-step solution

0 . 233 gm BaSO 4 has 1 millimole BaSO 4 and hence has lmillimole S ∴ organic compound X also has 1 millimole S % of S in 0 . 102 gm of organic compound X = 0 . 032 0 . 102 × 100 = 31 . 37 % 102 gm of this organic compound has 32 gm S This has same % of S

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