NO2 is in equilibrium with N2O4 a. Write a balanced equation for this reaction b

Question

NO2 is in equilibrium with N2O4

a. Write a balanced equation for this reaction

b. What is the formula for the equilibrium constant in terms of product/reactant using partial pressures (PNO2 and PN2O4) and concentration ([NO2] and [N2O4]) (2 expressions).

c. if Kc = 1300 at 273oC for this reaction and the equilibrium concentration of NO2 is 0.10M, what is the N2O4 concentration at equilibrium?

d. Fill in the blanks: decreasing the volume of the closed container in which the equilibrium is occuring will result in the formation of ______? (Hint: pressure increases with a decrease in volume)

Explanation / Answer

a) 2NO2(g) <=========> N2O4(g)

b) Kc = [N2O4]/[NO2]2  and Kp = PN2O4/(PNO2)2

c)  Kc =[N2O4]/[NO2]2

or, 1300 = [N2O4]/0.12

or, [N2O4] = 13 M

d) decreasing the volume of the closed container in which the equilibrium is occuring will result in the formation of N2O4

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