At 25°C, the Equilibrium Constant, K_c, for the Reaction 2A(g)

question 42

Multiple Choice

At 25°C, the equilibrium constant, K_c, for the reaction 2A(g) B(g) + C(g) is 0.0350.
A mixture of 8.00 moles of B and 12.00 moles of C in a 20.0-L container is allowed to come to equilibrium. What is the equilibrium concentration of A?

• A) 0.339 M
• B) 0.378 M
• C) 0.400 M
• D) 0.677 M
• E) 0.755 M

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