ava SE ent Kit 9- Downloads DQuestion 1 5 pts Nitric oxide reacts with oxygen to

Question

ava SE ent Kit 9- Downloads DQuestion 1 5 pts Nitric oxide reacts with oxygen to form nitrogen dioxide: 2 NO(g) + 02(g) #"2 NO2(g) What is Kc for the forward reaction if the equilibrium concentration of NO is 0.897 M, O2 is 0.155 M, and NO2 is 0.328 M at 25°C? Question 2 t 5 pts The decomposition of ammonia is: 2 NH3(g) N2(g) + 3 H2(g). If the partial pressure of ammonia is 0.009 atm and the partial pressures of N2 and H2 are each 0.798 atm at equilibrium, what is the value for Kp at 400°C for the forward reaction?

Explanation / Answer

1) Kc = [NO2]2 / [NO]2 [O2]

[O2] = 0.115 M

[NO] = 0.897 M

[NO2] = 0.328 M

Kc = [0.328]2 / [0.897]2 [0.115]

Kc = 0.1076 / 0.0925

Kc = 1.16

2) Kp = (PN2) (PH2)3 / (PNH3)2

PN2 = 0.798 atm

PH2 = 0.798 atm

PNH3 = 0.009 atm

Kp = (0.798)(0.798)3/ (0.009)2

Kp = 0.4055 / 0.000081

Kp = 5006.2

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