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# Solved Example Problems: DaltonŌĆÖs law of partial pressures

Chemistry : Gaseous State : Mixture of gases - DaltonŌĆÖs law of partial pressures : Solved Example Problems:

Let us understand Dalton's law by solving these problems.

1. A mixture of gases contains 4.76 mole of Ne, 0.74 mole of Ar and 2.5 mole of Xe. Calculate the partial pressure of gases, if the total pressure is 2 atm. at a fixed temperature.

### Solution: PNe = xNe PTotal = 0.595 ├Ś 2

= 1.19 atm.

PAr = xAr PTotal = 0.093 ├Ś 2

= 0.186 atm.

PXe = xXe PTotal = 0.312 ├Ś 2

= 0.624 atm.

2. An unknown gas diffuses at a rate of 0.5 time that of nitrogen at the same  temperature and pressure. Calculate the molar mass of the unknown gas

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11th Chemistry : UNIT 6 : Gaseous State : Solved Example Problems: DaltonŌĆÖs law of partial pressures |