Stoichiometry
The elevation in boiling point of a solution is proportional to the __________ of the solution.

Normality
Reciprocal of the molal concentration
Molal concentration
Molarity

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Stoichiometry
According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.

In the formation of solution, chemical combination/molecular association between unlike molecules takes place
The attractive forces between like and unlike molecules are almost equal
The component molecules are non polar and are of almost equal size
No component is concentrated at the surface of the solution

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