Heat capacity of gases with Cobra SMARTsense  ![]()
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Unknown Principle
Heat is added to a gas in a glass vessel by an electric heater which is switched on briefly. The temperature increase results in a pressure increase, which is measured with a manometer. Under isobaric conditions a temperature increase results in a volume dilatation, which can be read from a gas syringe. The molar heat capacities are calculated from the pressure or volume change.
Benefits - Determination of cp and cv
- For both demonstration and student experiments
- Suitable for many different gases
- Simplified implementation: all pre-settings already prepared
Tasks Determine the molar heat capacities of air at constant volume and at constant pressure. Learning objectives - Equation of state for ideal gases
- 1st law of thermodynamics
- Universal gas constant
- Degree of freedom
- Mole volumes
- Isobars
- Isotherms
- Isochors and adiabatic changes of state
Software included. Computer not provided.
Scope of delivery |
measureLAB, multi-user license
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14580-61
|
1
| |
Precision manometer
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03091-00
|
1
| |
Weather monitor with big display
|
87997-10
|
1
| |
PHYWE Power supply, 230 V,DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A
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13506-93
|
1
| |
Mariotte flask, 10 l
|
02629-03
|
1
| |
Syringe 10ml, Luer, 100 pcs
|
02590-10
|
1
| |
Stopcock,1-way,straight, glass
|
36705-00
|
1
| |
Stopcock,3-way,t-sh.,capil.,glass
|
36732-00
|
1
| |
Rubber stopper 26/32, 3 holes, 1 x 7 mm + 2 x 1,5 mm
|
39258-14
|
1
| |
Rub.stop.d=59.5/50.5mm, 1 hole
|
39268-01
|
1
| |
Rubber hose, various diameters
|
39282-00
|
2
| |
Silicone tubing, various diameters
|
39292-00
|
1
| |
Tubing adaptor, ID 3-5/6-10 mm
|
47517-01
|
1
| |
Nickel electrode,d 3mm,w.socket
|
45231-00
|
2
| |
Chrome-nickel wire, d.0,1mm,100m
|
06109-00
|
1
| |
Scissors,straight,blunt,l 140mm
|
64625-00
|
1
| |
On/off switch
|
06004-00
|
1
| |
Connecting cable, 32 A, red, various lengths
|
07361-01
|
2
| |
Connecting cable, 32 A, blue, various lengths
|
07360-04
|
1
| |
Connecting cable, 32 A, blue, various lengths
|
07361-04
|
2
| |
Tripod base, for 1 rod
|
02002-55
|
1
|
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Service
