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JIPMER Jipmer Medical Solved Paper-2002

  • question_answer
    Empirical formula of a hydrocarbon containing 80% carbon and 20% hydrogen is:

    A)  \[CH\]                                 

    B)  \[C{{H}_{2}}\]  

    C)         \[C{{H}_{3}}\]  

    D)         \[C{{H}_{4}}\]

    Correct Answer: C

    Solution :

    Element % Atomic weight Percentage at weight Simple ratio
    C 80 12 \[\frac{80}{12}=6.67\] \[\frac{6.67}{6.67}=1\]
    H 20 1 \[\frac{20}{1}=20.0\] \[\frac{20.0}{6.67}=3\]
    Hence, empirical formula of hydrocarbon\[=C{{H}_{3}}\].


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