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Derivation of Kp and Kc

The density o...

Question

The density of $O_{2}$ gas at $127^{o} C$ and $4.0$ atm pressure is: ( $R = 0.082 L a t m K^{- 1} m o l^{- 1}$ )

4.2 g / L

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3.9 g / L

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2.4 g / L

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1.5 g / L

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Solution

The correct option is D $3.9 g / L$
Using the relation $ρ = \frac{P M}{R T}$

$\Rightarrow ρ = \frac{4 \times 32}{0.082 \times 400}$

$\Rightarrow ρ = 3.9 g / L$

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The density of a gas is 2 $\frac{g}{L}$ at 1 atm and $27^{0} C$ . The density of the same gas at 2 atm and $127^{0} C$ is:

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