Principle
The state of a gas is determined by temperature, pressure and amount of substance. For the limiting case of ideal gases, these state variables are linked via the general equation of state. For achange of state under isochoric conditions this equation becomes Amontonslaw. In this experiment it is investigated whether Amontons law is valid for a constant amount of gas (air).
Tasks
For a constant amount of gas (air) investigate the correlation of
1.Volume and pressure at constant temperature (Boyle and Mariottes law)
2.Volume and temperature at constant pressure (Gay-Lussacs law)
3.Pressue and temperature at constant volume (Charles (Amontons law))
From the relationships obtained calculate the universal gas constant as well as the coefficient of thermal expansion, the coefficient of thermal tension, and the coefficient of cubic compressibility.
What you can learn about
Thermal tension coefficient
General equation of state for ideal gases
Universal gas constant
Amontons law
Materiallist Product Amount
Hose clip, diam. 8-12mm 40996-01 2
Silicone tubing i.d. 7mm 39296-00 1
Magnetic stirring bar 30 mm, cylindrical 46299-02 1
Glass beaker DURAN?, tall, 250 ml 36004-00 1
Silicone tubing i.d. 2mm 39298-00 1
Tubing adaptor, ID 3-5/6-10 mm 47517-01 1
Funnel, glass, top dia. 55 mm 34457-00 1
Magnet, d 10mm, l 200mm 06311-00 1
Universal clamp with joint 37716-00 1
Universal clamp 37715-00 2
Right angle clamp 37697-00 3
Support rod, stainless steel, l = 250 mm, d = 10 mm 02031-00 2
Power regulator 32288-93 1
Heating apparatus for glass jacket system 32246-93 1
Rubber caps, pack of 20 02615-03 1
Gas syringe, 100 ml 02614-00 1
Software Cobra3 - gas laws 14516-61 1
Glass jacket 02615-00 1
Cobra3, sensor -20..110 C 12120-00 1
Thermocouple NiCr-Ni, sheathed 13615-01 1
Modulconverter COBRA3-mea.unit 12150-04 1
Measuring module, Temperature NiCr-Ni, 330°C 12104-00 1
Measuring module, pressure 12103-00 1
Power supply 12V / 2A 12151-99 1
Data cable, plug/ socket, 9 pole 14602-00 1
Cobra3 BASIC-UNIT, USB 12150-50 1
H-base -PASS-, with 5 fixing points 02009-55 1
