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Properties of Composite Function

For the equil...

Question

For the equilibrium $A_{(g)} ⇌ B_{(g)} + C_{(g)}; K_{p} = 0.82$ atm at $27^{o}$ C. At the same temperature, its $K_{c}$ in mol $l i t^{- 1}$ is:
$[R = 0.082$ lit atm $m o l^{- 1} K^{- 1}]$

3.3

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1.0

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0.33

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0.033

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Solution

The correct option is D $0.033$
$A_{(g)} ⇌ B_{(g)} + C_{(g)}$

$Δ n_{g} = 2 - 1 = 1$

Given:
$K_{p} = 0.82 a t m$

$T = 300 K$

$K_{p} = K_{c} (R T)^{Δ n}$

$K_{c} = \frac{K_{p}}{(R T)^{Δ n}}$

$= \frac{0.82}{0.0821 \times 300}$

$K_{c} = 0.033 m o l / L$

Hence, option D is correct.

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