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NEET Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ NEET PYQ-Some Basic Concepts Chemistry

  • question_answer
    The percentage of C, H and N in an organic compound are 40%, 13.3% and 46.7% respectively then empirical formula is:                                                                                                                                    [AIPMT 2002]

    A)  \[{{C}_{3}}{{H}_{13}}{{N}_{3}}\]               

    B)  \[C{{H}_{2}}N\]

    C)   \[C{{H}_{4}}N\]

    D)                   \[C{{H}_{6}}N\]

    Correct Answer: C

    Solution :

    Table for Empirical formula
    Element % At. wt. Relative number Ratio of elements
    C 40.0 12 40/12 = 3.33 3.33/3.33 = 1
    H 13.3 1 13.3/1 = 13.3 13.3/3.33 = 4
    N 46.7 14 46.7/14 = 3.33 3.33/3.33 = 1
    Hence, empirical formula of compound is CH4N.


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