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If P^(@) and P(S) are the vapour pressur...

If `P^(@)` and `P_(S)` are the vapour pressure of the solvent and solution respectively, `n_(1) and n_(2)` are the mole fractions of the solvent and solute respectively, then:

A

`P = P_(0) N_(2)`

B

`P = P_(0)N_(1)`

C

`P_(0) = PN_(1)`

D

`P = P_(0)((N_(1))/(N_(2)))`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • If p^(0) and P_(S) are the vapour pressures of the solvent and solution respectively, n_(1) and n_(2) are the mole fractions of the solvent and solute respectively, then

    A
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    B
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    A
    `P_(s) = P^(@) 2x_(2)`
    B
    `P^(@) - P_(s) = P^(@)x_(2)`
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    `P_(s) = P^(@)x_(1)`
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    `(P^(@)-P_(s))//P_(s)=x_(1)//(x_(1)+x_(2))`

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    B
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