measuring boiling point Flashcards
1
Q
Purity of liquid can be determined
A
by measuring a boiling point
2
Q
two ways of measuring the purity of a liquid
A
This can be done in a distillation set up or by simply boiling a tube of the sample in an heating oil bath.
3
Q
why should pressure be noted?
A
Pressure should be noted as changing pressure can change the boiling
point of a liquid
4
Q
why is measuring boiling point is not the most accurate method of identifying a
substance
A
as several substances may have the same boiling point.
5
Q
why should the
thermometer should be
above the level of the
surface of the boiling liquid
A
To get a correct measure
of boiling point. the thermometer should be measuring the temperature of be measuring the
temperature of the
saturated vapour.
