1. If the ionization-equilibrium constants for Cs dS Cs1 1 e2 at 1600 and 2000 K are K 5 0.78 and K 5 15.63, respectively, estimate the enthalpy of ionization, in kJ/kmol, at 1800 K using the van't Hoff equation.
2. An equilibrium mixture at 2000 K, 1 atm consists of Cs, Cs1, and e2. Based on 1 kmol of Cs present initially, determine the percent ionization of cesium. At 2000 K, the ionization- equilibrium constant for Cs dS Cs1 1 e2 is K 5 15.63.
3. An equilibrium mixture at 18,000°R and pressure p consists of Ar, Ar1, and e2. Based on 1 lbmol of neutral argon present initially, plot the percent ionization of argon versus pressure for 0.01 # p # 0.05 atm. At 18,000°R, the ionization-equilibrium constant for Ar dS Ar1 1 e2 is K 5 4.2 3 1024.
4. At 2000 K and pressure p, 1 kmol of Na ionizes to form an equilibrium mixture of Na, Na1, and e2 in which the
temperature T, 1 atm. Determine the molar analysis of the exiting equilibrium mixture for
(a) T 5 2800 K.
(b) T 5 3000 K.