Проверка закона Бойля

Демонстрация обратной зависимости между давлением и объёмом

Gas Laws Intermediate (High School) 40 мин ~$15,00

Цель

Проверить закон Бойля (P₁V₁ = P₂V₂), измерив объём захваченного газа при различных давлениях.

Предпосылки

Boyle's law states that at constant temperature, the pressure and volume of a gas are inversely proportional. This experiment uses a closed syringe or J-tube manometer to measure gas volume at different pressures and confirm the relationship.

Предупреждения по безопасности

  • Do not apply excessive pressure to glass apparatus
  • Ensure all connections are airtight

Требуемые СИЗ

goggles

Материалы

  • Boyle's law apparatus or large syringe (1)
    60 mL syringe works
  • Pressure gauge (1)
    Or manometer
  • Rubber tubing (30 cm)
  • Graph paper (2 sheets)

Оборудование

Retort stand and clamp Weights or books for applying pressure Ruler

Процедура

1

Set up the Boyle's law apparatus with a known volume of trapped air. Record the initial pressure and volume.

5 мин
2

Increase the pressure by adding mercury or pushing the syringe. Record the new pressure and volume.

5 мин Do not force the syringe
3

Take at least 8 readings at different pressures, both increasing and decreasing.

15 мин
4

Calculate PV for each reading. They should all be approximately equal.

5 мин
5

Plot P vs V (hyperbola) and P vs 1/V (straight line through origin) graphs.

8 мин

Ожидаемые результаты

The product PV should remain approximately constant (within 5% experimental error). The P vs 1/V graph should be a straight line through the origin, confirming the inverse proportionality.

Уборка

Return apparatus to storage. Dispose of graph paper drafts.

Детали

Категория
Gas Laws
Сложность
Intermediate (High School)
Продолжительность
40 мин
Прим. стоимость
$15,00
Шаги
5
Материалы
4

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Frequently Asked Questions

What is the objective of Проверка закона Бойля?
Проверить закон Бойля (P₁V₁ = P₂V₂), измерив объём захваченного газа при различных давлениях.
How difficult is Проверка закона Бойля?
This experiment is rated as Intermediate (High School). It takes approximately 40 minutes to complete.
What safety precautions are needed for Проверка закона Бойля?
Key safety precautions include: Do not apply excessive pressure to glass apparatus; Ensure all connections are airtight.
What materials are needed for Проверка закона Бойля?
The main materials required are: Boyle's law apparatus or large syringe, Pressure gauge, Rubber tubing, Graph paper.
What results should I expect from Проверка закона Бойля?
The product PV should remain approximately constant (within 5% experimental error). The P vs 1/V graph should be a straight line through the origin, confirming the inverse proportionality.