The reaction
H₂(g) + I₂(g) 2HI(g)
Has K_p = 45.9 at 763 K. A particular equilibrium mixture at that temperature contains gaseous HI at a partial pressure of 4.46 atm and hydrogen gas at a partial pressure of 0.240 atm. What is the partial pressure of I₂?

Question

The reaction
H₂(g) + I₂(g) The reaction H2(g) + I2(g) 2HI(g) Has Kp = 45.9 at 763 K. A particular equilibrium mixture at that temperature contains gaseous HI at a partial pressure of 4.46 atm and hydrogen gas at a partial pressure of 0.240 atm. What is the partial pressure of I2? A) 1.81 atm B) 0.240 atm C) 0.810 atm D) 36.7 atm E) 0.405 atm

The reaction H<sub>2</sub>(g) + I<sub>2</sub>(g) 2HI(g) Has K<sub>p</sub> = 45.9 at 763 K. A particular equilibrium mixture at that temperature contains gaseous HI at a partial pressure of 4.46 atm and hydrogen gas at a partial pressure of 0.240 atm. What is the partial pressure of I<sub>2</sub>? A) 1.81 atm B) 0.240 atm C) 0.810 atm D) 36.7 atm E) 0.405 atm

2HI(g)
Has K_p = 45.9 at 763 K. A particular equilibrium mixture at that temperature contains gaseous HI at a partial pressure of 4.46 atm and hydrogen gas at a partial pressure of 0.240 atm. What is the partial pressure of I₂?

Quizplus · Accepted Answer

Using the equation for the equilibrium constant (Kp = (P_HI)^2/(P_H2*P_I2)), we can solve for the partial pressure of I2:

Kp = 45.9 = (4.46)^2 / (0.240 * P_I2)

P_I2 = (4.46)^2 / (0.240 * 45.9) = 1.81 atm

Therefore, the answer is choice A.

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

The Reaction H₂(g) + I₂(g) 2HI(g)