Excess Ag_2 SO_2 (s) is placed in water at 25 degree C. At equilibrium, the solu

Question

Excess Ag_2 SO_2 (s) is placed in water at 25 degree C. At equilibrium, the solution contains 0.029 M Ag^+ (aq). What is the equilibrium constant for the reaction below? Ag_2 SO_4 (s) 2 Ag^+ (aq) + SO_4^2- (aq) a. 1.8 times 10^-7 b. 6.1 times 10^-6 c. 1.2 times 10^-5 d. 2.4 times 10^-5 e. 8.4 times 10^-4 For the equilibrium N_2 O_4 (g) 2 NO_2 (g), at 298 K, K_p = 0.15. For this reaction system, it is found that the pressure of N+_2 O_4 is 3.7 times 10^-2 atm at equilibrium. What is the partial pressure of NO_2 at equilibrium? a. 4.9 atm b. 24 atm c. 0.0016 atm d. 0.0055 atm e. 0.074 atm

Explanation / Answer

Given kp = 0.15

Partial pressure of N2O4 = 0.037 atm

Let partial pressure of NO2 = x

x^2 / (N2O4) = 0.15

x^2 = 0.15*0.037

x = 0.074 atm

Thus correct option is (e)

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