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Characteristics of Equilibrium Constant

NH4Cls⇌ NH3g+...

Question

$N H_{4} C l (s) ⇌ N H_{3} (g) + H C l (g)$
Given reaction attains equilibrium at $6$ atm and a certain temperature. What is the equilibrium constant $K_{p}$ of the reaction in $a t m^{2}$ unit?

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Solution

${N H}_{4} C l (s) ⇌ {N H}_{3} (g) + H C l (g)$
$1 - x$ $x$ $x$
$K_{p} = P_{{N H}_{3}} . P_{H C l}$

$K_{p} = \frac{x}{2 x} P . \frac{x}{2 x} . P$

$K_{p} = \frac{x}{2 x} 6. \frac{x}{2 x} .6$

$K_{p} = 9 {a t m}^{2}$

The equilibrium constant $K_{p} = 9 {a t m}^{2}$

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