Question

1. The following reaction occurs at 25oC

 

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

 

 

a)   Write the equilibrium expression for Kc

 b) Calculate Kc at 25 degrees C if the equilibrium concentrations are  [H2]=0.106 M,        

                  [I2]=0.022 M, and  [HI] = 1.29 M

Answer 1

a) $Kc = \frac {[HI] ^2} { [H2][I2]}$

b) $Kc=53. 3$