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

  • question_answer Empirical formula of a hydrocarbon containing 80% carbon and 20% hydrogen is [MP PET 1997; EAMCET 1998; JIPMER 2002]

    A) CH

    B) \[C{{H}_{2}}\]

    C) \[C{{H}_{3}}\]

    D) \[C{{H}_{4}}\]

    Correct Answer: C

    Solution :

    Elements        No.of moles        Simple ratio C = 80%          80/12 = 6.66             1 H = 20%         20/1 = 20                   3 Hence, Empirical Formula = \[C{{H}_{3}}\].


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