A mixture contains 16 g of oxygen, 28 g of nitrogen and 8 g of methane. Total pressure of the mixture is 740mm. What is the partial pressure of nitrogen in mm?

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185

370

555

740

answer is B.

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Detailed Solution

PN2=XN2P =nN2nN2+nO2+nCH4P PN2=28282828+1632+816×740 =11+0.5+0.5×740 =12×740 PN2=370 mm

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