At 400ºC, K_c = 64 for the Equilibrium H₂(g)

question 38

Multiple Choice

At 400ºC, K_c = 64 for the equilibrium H₂(g) + I₂(g) 2HI(g) . If 3.00 mol H₂ and 3.00 mol I₂ are introduced into an empty 4.0-L vessel, what is the equilibrium concentration of HI at 400ºC?

• A) 0.15 M
• B) 1.2 M
• C) 2.4 M
• D) 4.8 M
• E) 5.8 M

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