Question

State Raoult's law. How is the molecular
mass of a solute determined from lowering
of vapour pressure measurement ?​​

Answer 1

Answer:

The relative lowering of vapour pressure is measured experimentally. Number of moles of solvent and the solute are, From the equation (9.35) the molar mass of the solute (MB) can be calculated using the known the values of wA, wB, MA and the measured relative lowering of vapour pressure.

Explanation:

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