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At 400 K, an equilibrium mixture of H2, I2, and HI consists of 0.082 mol H2,...

At 400 K, an equilibrium mixture of H2, I2, and HI consists of 0.082 mol H2, 0.084 mol I2, and 0.15 mol HI in a 2.50-L flask. What is the value of Kp for the following equilibrium? (R = 0.0821 L · atm/(K · mol))

2HI(g) H2(g) + I2(g)

A. 0.045

B. 7.0

C. 22

D. 0.29

E. 3.4

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