# State Raoult's law. Calculate the vapour pressure of a solution containing 10 g of a non volatile solute present in 80 g of ethanol at 298 K. Given the molecular weight of the solute as 120; the vapour pressure of alcohol is 22.45 mm of Hg at 298 K.

Boss
102 Points
6 years ago
In a solution with a nonvolatile solute, only the pure vapor of the solvent is ... The key equation to use is Raoult's Law, but in a slightly expanded form from how it ...“please aprove ra “
SAI SARDAR
1700 Points
6 years ago
RAOULT’S LAW : Raoult's law states that the vapor pressure of a solvent above a solution is equal to the vapor pressure of the pure solvent at the same temperature scaled by the mole fraction of the solvent present.

Raoult's Law only works for ideal mixtures.

In equation form, for a mixture of liquids A and B, this reads:

PA = X* PA0

PB = XB * PB0

IF YOU LIKE MY NASWER PLZ APPROVE IT.

RAKESH CHINDAM
428 Points
6 years ago
Raoult’s Law:
1. a law stating that the freezing and boiling points of an ideal solution are respectively depressed and elevated relative to that of the pure solvent by an amount proportional to the mole fraction of solute.
• a law stating that the vapour pressure of an ideal solution is proportional to the mole fraction of solvent.
T.kumar
281 Points
6 years ago
raaouts is defined as the relative lowering in vapour pressure propotinal to the mole fraction of the soute