Haryana PMT Haryana PMT Solved Paper-2008

  • question_answer
    An. unknown compound has molar mass\[240g/mol\] . Its empirical formula is \[C{{H}_{2}}O\] then its molecular formula will be

    A)  \[{{C}_{4}}{{H}_{8}}{{O}_{4}}\]       

    B)  \[{{C}_{12}}{{H}_{22}}{{O}_{12}}\]

    C)  \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]       

    D)  \[{{C}_{8}}{{H}_{16}}{{O}_{8}}\]

    Correct Answer: D

    Solution :

                    Empirical formula \[=C{{H}_{2}}O\] Empirical formula weight \[=30\]                 \[n=\frac{240}{30}=8\] Molecular formula \[={{(C{{H}_{2}}O)}_{8}}\]\[={{C}_{8}}{{H}_{16}}{{O}_{8}}\]


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