For the Endothermic Reaction A₂(g) 2A(g),a Snapshot of an Equilibrium

question 114

Multiple Choice

For the endothermic reaction A₂(g) 2A(g) ,a snapshot of an equilibrium mixture of A(g) and A₂(g) may look as follows.(Each circle represents 1.0 mol of A atoms,and the volume of the box is 1.0 L.) What is the equilibrium constant K_c for this reaction at 298 K?
(R = 0.08206 L • atm/K • mol)

• A)0.19
• B)0.67
• C)1.3
• D)2.7
• E)5.3

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