3.1 - Determination of the Relative Molecular Mass of a Volatile Liquid (Leaving Cert Chemistry): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What equation is used to estimate the of a volatile liquid in this experiment?
What equation is used to estimate the of a volatile liquid in this experiment?
Which volatile liquid is used as an example in this experiment?
Which volatile liquid is used as an example in this experiment?
Propanone
What is the purpose of the barometer in this experiment?
What is the purpose of the barometer in this experiment?
Record atmospheric pressure
What is the main safety hazard associated with propanone?
What is the main safety hazard associated with propanone?
Highly flammable
To what temperature should the water bath be heated?
To what temperature should the water bath be heated?
Approximately 95°C
How much propanone should be added to the flask?
How much propanone should be added to the flask?
3–4 cm³
Why is a small hole poked in the aluminium foil cap?
Why is a small hole poked in the aluminium foil cap?
Allow vapour to escape
How is the temperature of the vapour determined?
How is the temperature of the vapour determined?
Measure temperature of water
How is the mass of the vapour obtained?
How is the mass of the vapour obtained?
Difference in mass before and after
What alternative method can determine relative molecular mass?
What alternative method can determine relative molecular mass?
Mass spectrometry
Which measurement is most likely to introduce inaccuracy?
Which measurement is most likely to introduce inaccuracy?
Volume measurement
How would a water drop in the flask affect the calculated ?
How would a water drop in the flask affect the calculated ?
Give a smaller