CBSE Class 12 Chemistry 2020 Delhi Set 1 Solved Paper

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Question : 21
Total: 37
SECTION -B

State Raoult's law for a solution containing volatile components. What is the similarity between Raoult's law and Henry's law?
Solution:  
Raoult's law for a solution containing volatile components states that the partial pressure of a volatile component present in a solution is directly proportional to the mole fraction of that component at a given temperature.
PA α χA or PA=KχA
Raoult's law and Henry's law are similar as both gives equation to find partial pressure of gases.
PA=KχAPA=KHχA
(Raoult's law) (Henry's law)
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