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Vapour pressure of methyl alcohol and et...

Vapour pressure of methyl alcohol and ethyl alcohol solutions is represented by `P = 115 x_(A)+140` where `x_(A)`is the mole fraction of methyl alcohol. The value of `underset(x_(A)rarr0)(lim)(P_(B)^(0))/(x_(B))` is:

A

255

B

115

C

140

D

135

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The correct Answer is:
C
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At 40^(@)C , the vapour pressures in torr, of methyl alcohol and ethyl alcohol solutions is represented by the equation. P = 119X_(A) + 135 where X_(A) is mole fraction of methyl alcohol, then the value of underset(x_(A)rarr1)(lim)(P_(A))/(X_(A)) is

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OP TANDON-SOLUTIONS (GENERAL AND COLLIGATIVE PROPERTIES)-Set-2 (Level-A)
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  11. In the depression of freezing point experiment, it is found that the:

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  12. Which of the following is/are correct for a solution of a particular c...

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  13. Effect of adding a non-volatie solute to a solvent is"

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  14. Which of the following form/s an ideal solution ?

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  15. Osmotic pressure of a solution is :

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  16. Which of the following is/are true ?

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  18. Consider the following statements in respect of an ideal solution : ...

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