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At `40^(@)C`, the vapour pressure in torr of methyl and ethyl alcohol solutions is represented by `P = 119 X_(A)+135`, where `X_(A)` is mole fraction of methyl alcohol. The value of `(P_(B)^(@))/(X_(B))` at lim `X_(A) rarr 0)`, and `(P_(A)^(@))/(X_(A))` at lim `X_(B) rarr 0` are:
A. (a) `135, 254`
B. (b) `135, 230`
C. ( c) `119, 135`
D. (d) `140, 135`

1 Answer

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Correct Answer - A
when `X_(A)rarr0, X_(B)rarr1`,
Thus, `(P_(B)^(@))/(X_(B))=135 and (P_(A)^(@))/(X_(A))=254`

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