At 25 degrees Celsius, NO2 and N2O4 exist in the following equilibrium. Find the equilibrium pressure of N2O4 if Pno2=1.9 atm

Question

2NO₂(g)=N₂O₄

Answer 1

2NO₂(g) ==> N₂O₄

At equilibrium: K = (N₂O₄) / (NO₂)²

We need to know the K value for the reaction at the given temperature. Then use that value and plug in the 1.9 atm and solve for pressure of N₂O₄

For ex: if K = 7.0, we have...

7.0 = (N₂O₄) / (1.9)²

7.0 = (N₂O₄) / 3.61

(N₂O₄) = 25 atm = equilibrium pressure of N₂O₄