Correct Answer: Option A

Explanation

   C               H             N             O

\(\frac{53.1}{12}\)           \(\frac{6.2}{1}\)       \(\frac{12.4}{14}\)           \(\frac{28.3}{16}\)

\(\frac{4.425}{0.886}\)       \(\frac{6.2}{0.886}\)      \(\frac{0.886}{0.886}\)         \(\frac{1.769}{0.886}\)

   5       :        7     :         1      :        2

C\(_5\)         H\(_7\)         N              O\(_2\) -  Empirical formula

(Empirical formula) n = Molecular formula 

(C\(_5\)H\(_7\)NO\(_2\))n = 2 x vapour density

([12x5] + [1x7] + 14 + [16x2] ) n = 2 x 56.5

113n = 113 

 n = \(\frac{113}{113}\)

 n = 1

Therefore, the molecular formula is C\(_5\)H\(_7\)NO\(_2\) 

There is an explanation video available below.

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