Charles'sches Gesetz mit einem Luftballon

Messung von Volumenänderungen eines Gases bei verschiedenen Temperaturen

Gas Laws Beginner (Middle School) 30 Min. ~$5,00

Ziel

Das Charles'sche Gesetz demonstrieren, indem der Umfang eines luftgefüllten Ballons bei verschiedenen Temperaturen gemessen wird.

Hintergrund

Charles's law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature (Kelvin). By heating and cooling a balloon and measuring its size, the linear relationship between V and T can be confirmed.

Sicherheitswarnungen

  • Handle hot water carefully
  • Do not use boiling water directly on the balloon

Erforderliche PSA

goggles

Materialien

  • Latex balloons (3)
    Same size
  • String (1 m)
    For measuring circumference
  • Ice (1 kg)
  • Hot water (2 L)
    Various temperatures

Ausrüstung

Large containers (3) Thermometer Ruler or tape measure Timer

Durchführung

1

Inflate a balloon to a moderate size and tie it off. Measure its circumference at room temperature with string.

3 Min.
2

Prepare three water baths: ice water (~5°C), room temperature (~22°C), and hot water (~60°C).

5 Min. Handle hot water carefully
3

Submerge the balloon in ice water for 5 minutes. Remove and quickly measure circumference. Record temperature.

7 Min.
4

Return the balloon to room temperature water for 5 minutes. Measure circumference.

7 Min.
5

Submerge in hot water for 5 minutes. Measure circumference. Record temperature.

7 Min.
6

Convert temperatures to Kelvin. Plot V (proportional to circumference³) vs T(K). Extrapolate to find absolute zero.

5 Min.

Erwartete Ergebnisse

The balloon should be visibly smaller in ice water and larger in hot water. Plotting estimated volume vs absolute temperature should give a straight line. Extrapolating to zero volume should approximate -273°C (absolute zero).

Aufräumen

Drain water baths. Pop and dispose of balloons. Clean up any spills.

Details

Kategorie
Gas Laws
Schwierigkeit
Beginner (Middle School)
Dauer
30 Min.
Geschätzte Kosten
$5,00
Schritte
6
Materialien
4

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Frequently Asked Questions

What is the objective of Charles'sches Gesetz mit einem Luftballon?
Das Charles'sche Gesetz demonstrieren, indem der Umfang eines luftgefüllten Ballons bei verschiedenen Temperaturen gemessen wird.
How difficult is Charles'sches Gesetz mit einem Luftballon?
This experiment is rated as Beginner (Middle School). It takes approximately 30 minutes to complete.
What safety precautions are needed for Charles'sches Gesetz mit einem Luftballon?
Key safety precautions include: Handle hot water carefully; Do not use boiling water directly on the balloon.
What materials are needed for Charles'sches Gesetz mit einem Luftballon?
The main materials required are: Latex balloons, String, Ice, Hot water.
What results should I expect from Charles'sches Gesetz mit einem Luftballon?
The balloon should be visibly smaller in ice water and larger in hot water. Plotting estimated volume vs absolute temperature should give a straight line. Extrapolating to zero volume should approximate -273°C (absolute zero).