NEET Sample Paper NEET Sample Test Paper-16

  • question_answer 78) The empirical formula of a compound is  \[C{{H}_{2}}O.\]Its molecular weight is 180. The molecular formula of the compound is

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

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

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

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

    Correct Answer: B

    Solution :

    The molecular formula = Empirical formula \[\times \]Number of atoms. Number of atoms \[\text{=}\frac{\text{Molecular}\,\text{wight}}{\text{Emprical}\,\text{formula}\,\text{weight}}=\frac{180}{30}=6\] (Here empirical formula\[C{{H}_{2}}O,\,weight=12+2+16=30\]) So, molecular formula \[=C{{H}_{2}}O\times 6={{C}_{6}}{{H}_{12}}{{O}_{6}}\] Hence, the correct option is (b).

adversite



LIMITED OFFER HURRY UP! OFFER AVAILABLE ON ALL MATERIAL TILL TODAY ONLY!

You need to login to perform this action.
You will be redirected in 3 sec spinner

Free
Videos