A gas cylinder contains a binary mixture of argon and krypton. If the partial pressure of argon is 2.4 atm and the mole fraction of krypton in the mixture is 0.40 , what is the total pressure of the gas mixture?

Step-by-step solution

For a binary mixture, the sum of mole fractions is 1 . Mole fraction of argon ( _ Ar ) = 1 - Mole fraction of krypton _ Ar = 1 - 0.40 = 0.60 According to Dalton's law of partial pressures: Partial pressure of argon ( p_ Ar ) = Total pressure _ Ar Rearranging for total pressure: Total pressure = p_ Ar _ Ar Total pressure = 2.4 atm 0.60 = 4.0 atm Answer: 4.0 atm