Question

The graph below shows the Gibbs energy as a function of the extent of reaction () for the gas phase reaction N204 (8) 2 NO2 (g) at a temperature of 420 K and a total pressure of 1 bar. N204 = 2 NO2 100 99 1.0.25 98. Een GE) /kJ/mol 97 96 T = 420 K 0.8 0 0.2 0.4 0.6 /mol The minimum in the Gibbs energy is indicated on the plot at &eq = 0.25. The extent of the reaction is defined to range between: 0 <$<1. At equilibrium, what is the partial pressure of the NO2(g) (i.e., the Pno). 0.2 bar 0.25 bar 0.33 bar bar 0.5 bar 0.6 bar 0.75 bar 1.66 bar

please show me how you solve for the answer

Answer 1

$\xi$ _eq = 0.25 means that The Reaction is 25% Complete. Thus, at 1 bar pressure, the Equilibrium pressure of NO_{​​​​​2} is : (0.25*2) = 0.5 bar.

So, the Correct option is :

• 0.5 bar