The same boiling points are KI and Na₃PO₄.
Calculation:
0.010 m Na₃PO₄ in water: each molecule will give three sodium ions and one phosphate ion.
So the concentration of particles in the solution = 4 X 0.01 = 0.04 m
The boiling point of a liquid varies depending on the surrounding environmental pressure. A liquid in a partial vacuum has a lower boiling point than when that liquid is at atmospheric pressure. A liquid at low pressure has a lower boiling point than when that liquid is at atmospheric pressure.
If the boiling points are the same both substances evaporate together and accumulate in the condensation tube together, so distillation cannot be employed for two substances with the same boiling point. A mixture of two substances with the same boiling point can be separated by distillation.
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