Principle
The molar mass of a liquid is to be determined by evaporating a liquid at constant temperature and pressure, and measuring the volume of vapour formed using a calibrated gas syringe.
Benefits
- For both demonstration and student experiments
- Simple procedure - fast results
- Glass jacket system easily expandable
Tasks
- Determine the molar masses of diethyl ether and methanol.
- Discuss the results in terms of the real and ideal behaviour of vapours.
What you can learn about
- Ideal and ordinary gases
- Equations of state for ideal gases
- Gas volumetry
- Determination of molar masses according to the vapour density method (Victor Meyer)
Necessary accessories:
This experiments requires a precision balance
Precision Balance, Sartorius ENTRIS® II, 620 g : 1 mg (49311-99)
Scope of Supply
| Device Name | Item no. | Qty |
|---|
| Weather monitor, 6 lines LCD | 87997-10 | 1,00 |
| Diethyl ether 250 | 30007-25 | 1,00 |
| Lab thermometer,-10..+150C | 38058-00 | 2,00 |
| Syringe 1ml, Luer, 10 pcs | 02593-03 | 1,00 |
| Water, distilled 5 l | 31246-81 | 1,00 |
| Set gas laws with glass jacket, 230 V | 43003-88 | 1,00 |
| Cannula 0.6x60 mm, Luer, 20 pcs | 02599-04 | 1,00 |
| Power regulator | 32288-93 | 1,00 |
| Boiling beads, 200 g | 36937-20 | 1,00 |
Downloads and Documents