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NEET AIPMT SOLVED PAPER SCREENING 2008

  • question_answer
    An organic compound contains carbon hydrogen and oxygen. Its elemental analysis gave C, 38.71% and H, 9.67%. The empirical formula of the compound would be

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

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

    C) \[CHO\]               

    D)        \[C{{H}_{4}}O\]

    Correct Answer: A

    Solution :

    Element % At wt Relative no. of atoms Simplest ratio of atoms
    C 38.71 12 3.23 \[\frac{3.23}{3.23}=1\]
    H 9.67 1 9.67 \[\frac{9.67}{3.23}=3\]
    O 51.62 16 3.23 \[\frac{3.23}{3.23}=1\]
    Hence, empirical formula is\[C{{H}_{3}}O.\]


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