Pada reaksi : N2O4(g) ⇌ 2NO2(g) , 5 mol gas N2O4 dimasukkan ke dalam wadah, lalu sebagian terurai menghasilkan 5 mol gas NO2. Pada kesetimbangan, campuran gas menimbulkan tekanan total 6 atm. Hitung Kp!

<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; N₂O₄(g) ⇌ 2NO₂(g)</p><p>awal &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 5 mol</p><p>reaksi</p><p>setimbang &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 5 mol</p><p>&nbsp;N₂O₄(g) terurai 1/2 x 5 mol = 2,5 mol</p><p>&nbsp;N₂O₄(g) saat setimbang 5 - 2,5 mol = 2,5 mol</p><p>&nbsp;</p><p>P N₂O_{4 =}2,5/7,5 x 6 atm = 2 atm</p><p>P NO₂ = 5/7,5 x 6 atm = 4 atm</p><p>&nbsp;</p><p>Kp = (PNO₂)² / P N₂O₄</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= &nbsp;(4)² / 2</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= 16/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= 8</p>