Question

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Answer 1

Answer:

Refer to the attachment.

Explanation:

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Answer 2

Pa ° = 450 mm of Hg

Pb ° = 700 mm of Hg

P t = 600 mm of Hg

As per the formula ,

$\implies{P \: t = P a + P b }$

$\implies{P \:t = P a ° \: x a+ P b ° \: x b}$

we know that ,

X a + X b = 1

X b = 1 - X a

Substituting X b as 1 - X a in the above equation ,

$\implies{P \:t= P a ° \: x a+ P b ° \: (1 - xa)}$

$\implies{P \:t= P a ° \: x a+ P b ° - P b ° \: xa}$

$\implies{P t= (P a °- P b °)xa+ P b °}$

$\implies{600= (450- 700)xa+ 700}$

$\implies{ - 100= - 250xa}$

$\boxed{xa = 0.4}$

$\implies{xb \: = 1 - xa = 0.6}$

$\boxed{xb = 0.6}$

Vapor pressure of liquid A

$\implies{P a = P a ° \: x a}$

$\implies{P a =450 \times 0.4}$

$\boxed{P a =180mm \: of \: Hg}$

Vapor pressure of liquid B

$\implies{P b= P b° \: x b}$

$\implies{P b =700 \times 0.6}$

$\boxed{P b =420 \: mm \: of \:Hg }$

In vapor phase ,For liquid A

$\implies{P a=y a \times P t}$

$\implies{ya = \frac{P a}{P t} }$

$\implies{ya = \frac{180}{600} }$

$\boxed{ya = 0.3}$

we know that ,

$\implies{ya + yb = 1}$

$\boxed{yb = 0.7}$