A nonvolatile solute is dissolved in benzene and the resulting solution has a vapor pressure of 18. 5 torr. What is the mole fra

Question

2 years ago

11

ction of the solute? (p° of benzene is 26. 5 torr).

1 answer:

Veseljchak [2.6K] · Answer 1 · 2022-11-17T21:21:23+03:00

The mole fraction of the solute is given as 0.3019

<h3>The vapor pressure of the volatile solvent</h3>

The formula for the vapor pressure of the volatile solvent is given as

P = NP°

Using Raoult's law

N is defined to be the mole fraction

Po is the vapor pressure.

From P = NP°

N = P/P°

N = 18.5/26.5

N = 0.6981

<h3>The mole fraction</h3>

1- 0.6981

= 0.3019

The mole fraction of the solute is given as 0.3019

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