Answer to Question #178453 in General Chemistry for llujd

Question

Given:

H₂ (g) + I₂ (g) ⇌2HI (g)

At 400. K for the reaction above, K_p = 62.5.

In another experiment at a different temperature, H₂ (g), I₂ (g), and HI (g) are introduced to a flask at pressures of 0.040 atm, 0.020 atm, and 0.090 atm, respectively. If the partial pressure of HI (g) decreases by 50%, calculate the pressure of each species when equilibrium is established. 

Answer 1

Pressure=(0.040+0.020+0.090)×50/100 = 0.075 atm