Raoult's Law Ideal Solution
An ideal binary solution has components A and B. Total vapor pressure is given by:
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About This Question
- Subject
- chemistry
- Chapter
- solutions
- Topic
- raoult's law ideal solution
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
P = xA P°A + xB P°B
- Raoult's Law: For a solution of volatile liquids, the partial vapor pressure of each component (Pi) is directly proportional to its mole fraction (xi) in the solution.
- Component A: PA=xA×PA∘, where PA∘ is the vapor pressure of pure A.
- Component B: PB=xB×PB∘, where PB∘ is the vapor pressure of pure B.
- Dalton's Law: The total pressure (Ptotal) above the solution is the sum of the partial pressures: Ptotal=PA+PB=xAPA∘+xBPB∘.
- Significance: Ideal solutions strictly follow this relationship across the entire range of concentrations.
This easy difficulty chemistry question is from the chapter solutions, covering the topic of raoult's law ideal solution. It appeared in the 2025 exam.
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