The Reaction A₂ + B₂ ⇌ 2AB Has an Equilibrium

question 113

Multiple Choice

The reaction A₂ + B₂ ⇌ 2AB has an equilibrium constant K_c = 1.8.The following pictures represent reaction mixtures that contain A₂ molecules (shaded) and B₂ molecules (unshaded) ,and AB molecules.
-Which nonequilibrium mixtures will react in the reverse direction to reach equilibrium?

• A)reaction mixtures (1)and (2)
• B)reaction mixtures (1)and (4)
• C)reaction mixtures (2)and (3)
• D)reaction mixtures (3)and (4)

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