NEET Sample Paper NEET Sample Test Paper-15

  • question_answer The empirical formula of a compound is \[C{{H}_{2}}O.\]Its molecular weight is 180. The molecular formula of that compound is

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

    B) \[{{C}_{6}}H{{O}_{4}}\]

    C) \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\]                      

    D) \[{{C}_{5}}{{H}_{10}}{{O}_{5}}\]   

    Correct Answer: A

    Solution :

    As number of atoms \[=\frac{\text{Molecular}\,\text{weight}}{\text{Empirical}\,\text{formula}\,\text{weight}\,\text{of}\,\text{C}{{\text{H}}_{\text{2}}}\text{O}}\] \[=\frac{180}{30}=6\] So molecular formula of compound \[=6\times \text{empirical}\,\text{formula}\,=6\times C{{H}_{2}}O\] \[={{C}_{6}}{{H}_{12}}{{O}_{6}}\] Hence, the correct option is [a].

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