At 293 K, vapour pressure of pure benzene is 75mm of Hg and that of pure toluene is 22 mm of Hg. The vapour pressure of the solution which contains 20

Question

At 293 K, vapour pressure of pure benzene is 75mm of Hg and that of pure toluene is 22 mm of Hg. The vapour pressure of the solution which contains 20

At 293 K, vapour pressure of pure benzene is 75mm of Hg and that of pure toluene is 22 mm of Hg. The vapour pressure of the solution which contains 20 mol% benzene and 80 mol % toluene is
A. 32.6 mm Hg
B. 64.4 mm Hg
C. 97 mm Hg
D. 3.26 mm Hg

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`n_(Ben)=20%0.2`
`n_(Tol)=80%=0.8`
`P_(s)=X_(B)P_(B)^(@)+X_(T)P_(T)^(@)`
`P_(s)=0.2xx75+0.8xx22`
`=15.0+17.6`
`32.6`

4 views Answered 2023-02-05 15:29