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State Raoult's law for the solution cont...

State Raoult's law for the solution containing volatile components. What is the similarity .
between Raoult's law and Henry's law ?

Text Solution

Verified by Experts

Raoult's law state that for a solution of volatile liquids, the partial vapour pressure of each
component in the solution is directly proportional to its mole fraction.
Thus, if there is a solution of two liquid components (1 and 2), then for component 1 :
`P_(1)proptox_(1)`
`P_(1)= P_(10)X_(1)`
For component 2 :
`P_(2)=P_(20)X_(2)`
Here :
`P_(1),P_(2)` = partial vapour of two valatile components (1 and 2) of the solution
`P_(10),P_(20)` = Vapour pressure of pure components (1 and 2)
`x_(1),x_(2)` = Mole fractions f the components (1 and 2)
Simoilarity between Raoult's law and Henry's law : Both laws state that the partial pressure
of the volatile component or gas is directly proportional to its mole fraction in the solution.
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Knowledge Check

  • Raoult's law states that

    A
    the partial pressure of the gas in vapour phase is proportional to the mole fraction of gas in the solution
    B
    for solutions of volatile liquids, the partial vapour pressure of each component of the solution is directly present in the solution
    C
    the solubility of volatile liquid is directly proportional to partial pressure of the gas
    D
    None of the above
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