Dalton's Law of Partial Pressure

Video on Dalton's Law of Partial Pressure

Notes on Dalton's Law of Partial Pressure

P_total = n_total (RT)

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Exercises on Dalton's Law of Partial Pressure

1. Mixtures of helium and oxygen are used in the "air" tanks of underwater divers for deep dives. For a particular dive, 12 L of O₂ at 25 C and 1.0 atm and 46 L of He at 25 C and 1.0 atm were both pumped into a 5.0 L tank. Calculate the partial pressure of each gas and the total pressure in the tank at 25 C.

2. A 2.0 L flask containing a mixture of N₂ and O₂ gas at 25 C. The total pressure of the gaseous mixture is 0.91 atm, and the mixture is known to contain 0.050 mol of N₂. Calculate the partial pressure of oxygen and the moles of oxygen gas present.

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