In a mixture of benzene vapor and nitrogen gas at a total... — Answer & Explanation | PrepBeePakistan

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HomeMCQsChemical Engineering

MEDIUMENGLISHChemical Engineering

In a mixture of benzene vapor and nitrogen gas at a total pressure of 900 mm Hg, if the absolute humidity of benzene is 0.2 kg benzene/kg nitrogen, the partial pressure of benzene in mm Hg is__________________?

Correct answer: B

Explanation

Partial pressure is calculated using Dalton's law: $P_{benzene} = X_{benzene} imes P_{total}$. The mole fraction of benzene ($X_{benzene}$) is found from the humidity ratio.

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