Practical Chemistry

Experiment 9: Determining the relative molecular mass of a gas


Aim

To measure the relative molecular mass of a series of gases by direct means

Notes

The students have studied the gas laws and are provided with three bottles each containing a different gas.

Instructions given

Plan a method to find out the relative molecular mass of each gas.

Provided

Access to the usual laboratory apparatus, balance, barometer, table of temperature-dependent water densities, thermometer.


Experimental report

The following factors will be checked:

  • Choice of method
  • Accurate recording of raw data
  • Presentation of raw data
  • Data analysis and presentation
  • Evaluation of errors both qualitative and numerical

Assessment


 
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