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Manipal Medical Manipal Medical Solved Paper-2005

  • question_answer
    A gas is found to have a formula\[{{[CO]}_{x}}\].If its vapour density is 70, the value of\[x\]is:                                      

    A)  2.5             

    B)  3.0

    C)  5.0            

    D)  6.0

    Correct Answer: C

    Solution :

     Molecular weight\[=2\times \]vapour density \[=2\times 70\] \[=140\] \[\therefore \] \[{{(CO)}_{x}}=140\] or      \[{{(12+16)}_{x}}=140\] or          \[28x=140\] \[\therefore \] \[x=5\]


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