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Chapter: 11th Chemistry : Gaseous State

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Solved Example Problems: Dalton’s law of partial pressures

Chemistry : Gaseous State : Mixture of gases - Dalton’s 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 × 2 

= 1.19 atm.

 

PAr = xAr PTotal = 0.093 × 2

= 0.186 atm.

 

PXe = xXe PTotal = 0.312 × 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

 

Solution:


 


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