The Response of Equilibria to Changes in Conditions 11.79

[Semi Yoon]

A reactor for the production of ammonia by the Haber process is found to be at equilibrium with PN2 = 3.11 bar, PH2 = 1.64 bar, and PNH3 = 23.72 bar. If the partial pressure of N2 is increased by 1.57 bar, how would you find the partial pressure of each gas once equilibrium is re-established?

[Lorena Zhang 4E]

You need to write out the balanced equation. Then you can calculate Kc out of it. After, you set up an ICE table in which the initial for PN2, PH2, and PNH3 should be 3.11+1.57=4.68 bar, 1.64 bar, and 23.72 bar respectively.

I 4.68 1.64 23.72

C -x -3x +2x

E 4.68-x 1.64-3x 23.72+2x

You will be able to write the new K expression and equaling it to the calculated Kc will allow you to generate the value of x.