Ley de Charles con un Globo

Medición de los cambios de volumen de un gas con la temperatura

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

Objetivo

Demostrar la ley de Charles midiendo la circunferencia de un globo inflado con aire a diferentes temperaturas.

Antecedentes

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.

Advertencias de seguridad

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

EPP requerido

goggles

Materiales

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

Equipamiento

Large containers (3) Thermometer Ruler or tape measure Timer

Procedimiento

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

Resultados esperados

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).

Limpieza

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

Detalles

Categoría
Gas Laws
Dificultad
Beginner (Middle School)
Duración
30 min
Costo estimado
$5,00
Pasos
6
Materiales
4

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Frequently Asked Questions

What is the objective of Ley de Charles con un Globo?
Demostrar la ley de Charles midiendo la circunferencia de un globo inflado con aire a diferentes temperaturas.
How difficult is Ley de Charles con un Globo?
This experiment is rated as Beginner (Middle School). It takes approximately 30 minutes to complete.
What safety precautions are needed for Ley de Charles con un Globo?
Key safety precautions include: Handle hot water carefully; Do not use boiling water directly on the balloon.
What materials are needed for Ley de Charles con un Globo?
The main materials required are: Latex balloons, String, Ice, Hot water.
What results should I expect from Ley de Charles con un Globo?
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).