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EquilibriumMCQ

Questions 22-25 refer to the following information. N2O4(g) ⇄ 2 NO2(g) Kp = 3.0 at 70°C colorless brEquilibrium Chemistry Question

Question

Questions 22-25 refer to the following information.

N2O4(g) ⇄ 2 NO2(g) Kp = 3.0 at 70°C
colorless brown

A mixture of NO2(g) and N2O4(g) is placed in a glass tube and allowed to reach equilibrium at 70°C, as represented above.

Which of the following best predicts how the partial pressures of the reacting species will be affected if a small amount of Ar(g) is added to the equilibrium mixture at constant volume?

A.

PNO2 will decrease and PN2O4 will increase.

B.

PNO2 will increase and PN2O4 will decrease.

C.

Both PNO2 and PN2O4 will decrease.

D.

No change will take place.

✓ Correct
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