Question

b) A 36 mg sample of an organic compound (MW= 84) is dissolved in 10 ml of water. This aqueo solution is extracted with 5 ml of hexane. Separation and analysis of the aqueous phase show that it now contains 12 mg of the organic compound. Calculate the partition coefficient for th compound.

Answer 1

According to raoult's law,

p

0

p

0

−p

=

m×W

w×M

Where,

p

0

is Vapour pressure of pure water

p is vapour pressure of solvent

w is weight of solute

m is molecular weight of solute

W is molecular weight of solvent

32

32−31.84

=

m×200

10×18

⇒m=

0.005

0.9

=180

$According to raoult's law, </p><p></p><p>p0p0−p=m×Ww×M</p><p></p><p>Where, </p><p></p><p>p0 is Vapour pressure of pure water</p><p></p><p>p is vapour pressure of solvent</p><p></p><p>w is weight of solute</p><p></p><p>m is molecular weight of solute</p><p></p><p>W is molecular weight of solvent</p><p></p><p></p><p>3232−31.84=m×20010×18</p><p></p><p>⇒m=0.0050.9=180</p><p></p><p></p><p>$

mark me as brainlist