The value of kp for the reaction 2no2 (g)  n2o4 (g) is 1.52 at 319 k. what is the value of kp at this temperature for the reaction n2o4 (g)  2no2 (g) ?

Answer is: the value of Kp at this temperature is 0.657.

Chemical reaction 1: 2NO₂ ⇄ N₂O₄.

Chemical reaction 2: N₂O₄ ⇄2NO₂.

Kp₁ = [N₂O₄] / [NO₂]²; equilibrium constant for chemical reaction 1.

Kp₂ = [NO₂]² / [N₂O₄]. equilibrium constant chemical reaction2.

Kp₁ = 1.52.

Kp₂ = 1 / Kp₁.

Kp₂ = 1 / 1.52.

Kp₂ = 0.657.