In a system there are 2 gasses: Helium at (1.5atm) and Argon at (0.75atm). A third gas, Neon, is added to the system and the new total pressure is 2.5atm. What is the partial pressure of the Neon?

Answer 1

Total pressure = sum of partial pressures of each gas.

He = 1.5 atm

Ar = 0.75 atm

Ne = ?

P_total = 2.5 atm

P_total = 1.5 atm + 0.75 atm + x atm

2.5 atm = 1.5 atm + 0.75 atm + x atm

x = 0.25 atm = partial pressure of Ne