32.2 gm of an organic compound containing C,H and O when completely combusted produces 61.6 gm of CO2 and 37.8 gm of H2O. Select the correct option:

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32.2 gm of an organic compound containing C,H and O when completely combusted produces 61.6 gm of ${CO}_{2}$ and 37.8 gm of $H_{2} O$ . Select the correct option:

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% of O in the organic compound is 17.04 %

% of C in the organic compound is 40%

% of H in the organic compound is 13.04 %

Data given is insufficient

answer is B.

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Detailed Solution

In the reaction we have;
$\underset{32.2 g}{C_{2} H_{5} OH} + \underset{67.2 g}{3 O_{2}} ⟶ \underset{61.6 g}{2 {CO}_{2}} + \underset{37.8 g}{3 H_{2} O}$

$\begin{aligned} % C \to \frac{\frac{61.6}{44} \times 12}{32.2} \times 100 = 52.17 % \\ % H \to= \frac{\frac{37.8}{18} \times 2}{32.2} \times 100 = 13.04 % \end{aligned}$