Advertisements
Advertisements
प्रश्न
State Raoult’s law for a solution containing volatile components. Write two characteristics of the solution which obey Raoult’s law at all concentrations.
Advertisements
उत्तर
Raoult's Law: According to Raoult's law, for a solution of two volatile liquids, the partial vapor pressure of each component of the solution is directly proportional to its mole fraction present in solution.
`"p"_1∝ "x"_1`
Implies that
`"P"_1="P"_1^circ "x"_1`
P1=Partial pressure of component 1.
x1 =mole fraction of component 1.
`"P"_1^circ`=pure vapour pressure of component 1.
Ideal solution obeys Raoult’s law at all concentrations.
The conditions obeyed are:
(i) ΔmixH=0
(ii) ΔmixV=0
APPEARS IN
संबंधित प्रश्न
State Raoult’s law for the solution containing volatile components
Vapour pressure of pure water at 298 K is 23.8 mm Hg. 50 g of urea (NH2CONH2) is dissolved in 850 g of water. Calculate the vapour pressure of water for this solution and its relative lowering.
The vapour pressure of water is 12.3 kPa at 300 K. Calculate vapour pressure of 1 molal solution of a non-volatile solute in it.
Benzene and toluene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and toluene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. Calculate the mole fraction of benzene in vapour phase if 80 g of benzene is mixed with 100 g of toluene.
A solution containing 8.44 g of sucrose in 100 g of water has a vapour pressure 4.56 mm of Hg at 273 K. If the vapour pressure of pure water is 4.58 mm of Hg at the same temperature, calculate the molecular weight of sucrose.
Raoult’s law states that for a solution of volatile liquids the partial pressure of each component in the solution is ____________.
At equilibrium the rate of dissolution of a solid solute in a volatile liquid solvent is ______.
On the basis of information given below mark the correct option.
On adding acetone to methanol some of the hydrogen bonds between methanol molecules break.
A solution of a non-volatile solute in water freezes at −0.30°C. The vapour pressure of pure water at 298 K is 23.51 mm Hg and Kf for water is 1.86 degree/mol. The vapour pressure of rain solution at 298 K is ______ mm Hg.
The vapour pressure of pure liquid X and pure liquid Y at 25°C are 120 mm Hg and 160 mm Hg respectively. If equal moles of X and Y are mixed to form an ideal solution, calculate the vapour pressure of the solution.
