Using Raoults law explain how the total vapour pressure over the solution is
related to mole fraction of components in the following solutions.(i) CHCl3 (l) and CH2Cl2(l) (ii) NaCl(s) and H2O (l)EXPLAIN IN DETAIL.

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Solution

Part-1
For a binary solution having two components such as CHCl₃ and CH₂Cl₂ having volatile nature. The total pressure for such binary system is given as
p = X₁p₁⁰+ X₂p₂⁰

p1 = partial pressure of CHCl₃
p2 = partial pressure of CH₂Cl₂
p = Total vapor pressure

Part-II

For a binary system containing NaCl as non-volatile solute in a solution then the partial pressure term only considered for vaporisable component according to Raoults law. Hence the expression for total pressure or a binary system is reduced to

p = X₁p₁⁰

p1= partial pressure of H₂O component.

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Similar questions

Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.
(a) $C H C l_{3} (l) a n d C H_{2} C l_{2} (l)$

Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.
(b) $N a C l (s) a n d H_{2} O (l)$

Q. Vapour pressure of chloroform

(C H C l_{3})

and dichloromethane

(C H_{2} C l_{2})

298 K

are

200 m m H g

and

415 m m H g

respectively.
(i) Calculate the vapour pressure of the solution prepared by mixing

25.5 g

C H C l_{3}

and

40 g

C H_{2} C l_{2}

290 K

and
(ii) Mole fraction of each component in solution.

Q. Consider a binary mixture of two ideal volatile liquids A and B.
Which of the following represents the correct relation?

(Here total pressure of the solution is

(P_{T})

, mole fraction of component A in vapour phase is

y_{A}

, vapour pressure of component A and B in pure states is

p_{A}^{\circ} a n d p_{B}^{\circ}

respectively.)

The mole fraction of component A in vapour phase is $x_{1}$ and mole fraction of component A in liquid mixture is $x_{2} (P_{A}^{0}$ = vapour pressure of pure A; $P_{B}^{0}$ = vapour pressure of pure B). What is the total pressure?

Show that relating lawing of vapour pressure of solution is equal to the mole fraction of solute

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Using Raoults law explain how the total vapour pressure over the solution isrelated to mole fraction of components in the following solutions.(i) CHCl3 (l) and CH2Cl2(l) (ii) NaCl(s) and H2O (l)EXPLAIN IN DETAIL.

Using Raoults law explain how the total vapour pressure over the solution is
related to mole fraction of components in the following solutions.(i) CHCl3 (l) and CH2Cl2(l) (ii) NaCl(s) and H2O (l)EXPLAIN IN DETAIL.