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  3. Gaseous mixture contains 56 g of N2, 44 g of CO2 and 16g of CH4. The total pressure of mixture is 720 mm of Hg.

. Gaseous mixture contains 56 g of N2, 44 g of CO2 and 16g of CH4. The total pressure of mixture is 720 mm of Hg.

The partial pressure of methane (in mm Hg) is

A. 75
B. 160
C. 180
D. 215
 

Best Answer

(c)

partial pressure of CH4= mole fraction of CH4 × total pressure 
=720/4 = 180 mm Hg

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