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Concentration Terms

In the follow...

Question

In the following, equilibrium partial pressure of $N H_{3}, N_{2}$ and $H_{2}$ gasses are 4, 1 and 2 atm respetively at 300 K. what is value of $K_{p}$ ?
$N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g)$

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Solution

The equilibrium constant expression is $K_{p} = \frac{P_{N H_{3}}^{2}}{P_{N_{2}} \times P_{H_{2}}^{3}} = \frac{4^{2}}{1 \times 2^{3}} = \frac{16}{8} = 2$ .
Hence, the value of the equilibrium constant is 2.

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