At a given temperature total vapour pressure (in Torr) of a mixture of volatile components A and B is given by `P = 12 - 75 X_(B)` hence vapour pressu

Question

At a given temperature total vapour pressure (in Torr) of a mixture of volatile components A and B is given by `P = 12 - 75 X_(B)` hence vapour pressu

At a given temperature total vapour pressure (in Torr) of a mixture of volatile components A and B is given by `P = 12 - 75 X_(B)` hence vapour pressure of pure A and B respectively (in Torr) are
A. 120,75
B. 120195
C. 120,45
D. 75,45

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 - C
`P = P_(A)^(@) X_(A) + P_(B)^(@) X_(B)`
`P = P_(A)^(@) (1-X_(B)) +P_(B)^(@) X_(B)`
`P = P_(A)^(@) - (P_(A)^(@)-P_(B)^(@)) X_(B)`
But `P = 120 - 75 X_(B)`
`:. P_(A)^(@) = 120` Torr
`P_(A)^(@) - P_(B)^(@) = 75`
`P_(B)^(@) = P_(A)^(@) - 75 = 120 - 75 = 45` Torr

4 views Answered 2023-02-05 15:29