pA and pB are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution.
If XA represents the mole fraction of component A, the total pressure of the solution will be:

1. pA + XA (pB-pA) 2. pA + X(pA-pB)
3. pB + X(pB-pA) 4. pB + X(pA-pB)
Subtopic:  Dalton’s Law of Partial Pressure |
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Level 2: 60%+
AIPMT - 2012
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