JEE Main & Advanced Chemistry Organic Chemistry: Some Basic Principles & Techniques Question Bank Chemical analysis of organic compounds

  • question_answer 0.2595g of an organic substance in a quantitative analysis yielded 0.35 g of the barium sulphate. The percentage of sulphur in the substance is  [CPMT 2000; AFMC 2001; Pb. CET 2000]

    A) 18.52g

    B) 182.2 g

    C) 17. 5 g

    D) 175.2g

    Correct Answer: A

    Solution :

    \[%\,\,\text{of}\,\,\text{S}=\frac{\text{32}}{\text{233}}\times \frac{\text{wt}\text{.}\,\,\text{of}\,\,BaS{{O}_{4}}}{\text{wt}\text{.}\,\,\text{of}\,\,\text{organic}\,\,\,\text{compound}}\times 100\]            \[=\frac{32}{233}\times \frac{0.35}{0.2595}\times 100=18.52%\,\,gm\].

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