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  4. An organic compound contains 78 % (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of C is 12, H is 1]

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Q. An organic compound contains $78 \%$ (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of $C$ is $12, H$ is $1$]

NEETNEET 2021Some Basic Concepts of Chemistry

Solution:

$ \% C =78$
$ \% H =22 $
$ C : H =\frac{78}{12}: \frac{22}{1}$
$=6.5: 22 $
$ \frac{6.5}{6.5} : \frac{22}{6.5}=1: 3.3 $
$ C : H = CH _{3} $