EN Chemistry: Laboratory Experiments

Page 10

Kinetic Theory

LEC 01

01.01 Velocity of molecules and the MAXWELL BOLTZMANN distribution function What you can learn about Kinetic theory of gases Temperature Model kinetic energy Average velocity Velocity distribution

Principle and tasks By means of the model apparatus for kinetic theory of gases, the motion of gas molecules is simulated and the velocity is determined by registration of the throw distance of the glass balls. This velocity distribution is compared to the theoretical MAXWELL-BOLTZMANN equation.

What you need: Kinetic gas theory apparatus

09060.00

1

Receiver with recording chamber

09061.00

1

Power supply, variable, 15 VAC/ 12 VDC/ 5 A

13530.93

1

Precision balance CPA 623S (620 g/0.001 g), set with software

49224.88

1

Digital stroboscope

21809.93

1

Stopwatch, digital, 1/100 sec.

03071.01

1

Tripod base -PASS-

02002.55

2

Connecting cord, l = 750 mm, red

07362.01

1

Connecting cord, l = 750 mm, blue

07362.04

1

Glass beaker, 50 ml, tall

36001.00

5

Spoon

40874.00

1

Velocity of molecules and the MAXWELL BOLTZMANN distribution function P3010101

Distribution of molecule velocities of oxygen at 273 K.

theoretical distribution experimental distribution

Experimental and theoretical velocity distribution in the model experiment.

8 Laboratory Experiments Chemistry

PHYWE Systeme GmbH & Co. KG 路 D - 37070 G枚ttingen


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