A vessel contains 28 g of N₂ and 30 g of O₂ at temperature T = 1800 Kelvin and pressure 2 atm. Find the pressure if N₂ dissociates 30% in O₂, and dissociation of O₂ is 50%, if temperature remains constant.
A) 1.8 atm
B) 2.0 atm
C) 2.2 atm
D) 2.4 atm