Consider the liquid–vapor equilibrium of H₂O at 20° C in which N₂ is added to the gas phase to obtain a total pressure of 1 atm. Assuming that the N₂ is both inert and insoluble in the liquid H₂O, how does the N₂ affect the equilibrium pressure (or partial pressure) of the H₂O vapor? To answer this, compute the partial pressure of the H₂O vapor in the H₂O(g)–N₂ mixture. The total pressure is fixed at 1 atm.