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Entropy

At 60oC the...

Question

At $60^{o} C$ the vapor density of $N_{2} O_{4}$ gas was found to be $30.2$ . Calculate the percentage of $N O_{2}$ molecules by moles.

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Solution

$N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)$
vapour density= $\frac{92}{2}$ = $46$
Density= $30.2$
$α = \frac{D - d}{d} = \frac{46 - 30}{30.2} = \frac{16}{30.2} = 0.5298$
The degree of dissociation is $53$ %

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