Question

What is the numerical value of Kc for the following reaction if the equilibrium mixture contains 0.055 M N2O4 and 0.34 M NO2? N2O4 (g) ===== 2 NO2 (g)

Answer 1

This is a gas phase reaction,so we can calculate the equlibrium constant in term of pressure( Kp ).But no pressure is given here, so can't calculate Kp. If we know the temperature of the reaction then we can also calculate Kc from Kp value from the following relation......

$Kp = Kc \times (RT)^{^{^{}}}\Delta \upsilon ^{}$

  $\Delta \upsilon$=change of coefficient of the reactant and product.

Here we have to caculate the Kc value from the direct formula of Kc.

N204600) = 2N02 (7) Concentration of wou e N204 = 0.055 M and = 0.34 M. Noz Now 2 NO2 ke = 04ولوس (0.3472 2.10 0.055 So, the numerical value of ke is 2.LO