measuring boiling point Flashcards
what is measuring boiling point used for
it can be used to determine purity of a liquid
how can we measure boiling point
in a distillation set up or by boiling a tube of the sample in a heating oil bath
how do you know if a liquid is pure
it will have the boiling point referred to in data books
what happens if the liquid is impure
the boiling point tends to be higher than the pure liquid
what can also change the boiling point of a liquid
pressure
how can you get a correct measure of the boiling point
the thermometer should be above the level of the surface of the boiling liquid and be measuring the temperature of the saturated vapour
why is measuring the boiling point not the most accurate method of identifying a substance
several substances may have the same boiling point
