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

  • question_answer On complete combustion 1.4 g hydrocarbon gave 1.8 g water. Empirical formula of the hydrocarbon is

    A) \[CH\]

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

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

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

    Correct Answer: B

    Solution :

    \[\because \] 1.8gm water obtained from 1.4gm hydrocarbon \[\therefore \]18gm water obtained from - \[\frac{1.4}{1.8}\times 18=14\] gm.     Empirical formula Mass = 14 \[\therefore \] Empirical formula = \[C{{H}_{2}}\].

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