Repeat the previous problem, assuming the argon constitutes 1% of a gas mixture where we neglect any reactions of other gases and find the pressure that will give a mole concentration of A _r + of 0.1%.

Data from previous problem 

At 10 000 K the ionization reaction for argon as Ar ⇔ Ar+ + e− has an equilibrium constant of K = 4.2 × 10−4. What should the pressure be for a mole concentration of argon ions (Ar+) of 10%?