An aqueous solution containing 28% by mass of a liquid A (molecular mass = 140) has a vapour pressure of 160 mm at `37^(@)C`. Find the vapour pressure of pure liquid A (the vapour pressure of water at `37^(@)C` is 150 mm)

Explanation

To solve the problem step by step, we will use Raoult's Law and the information provided in the question.

### Step 1: Understand the Given Information
- The mass percentage of liquid A in the solution is 28%.
- The molecular mass of liquid A is 140 g/mol.
- The vapor pressure of the solution (P_total) is 160 mmHg.
- The vapor pressure of pure water (P0_B) at 37°C is 150 mmHg.

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