Xác Minh Định Luật Boyle

Minh họa mối quan hệ nghịch giữa áp suất và thể tích

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

Mục tiêu

Xác minh định luật Boyle (P₁V₁ = P₂V₂) bằng cách đo thể tích khí bị nhốt ở các áp suất khác nhau.

Bối cảnh

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.

Cảnh báo an toàn

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

PPE cần thiết

goggles

Vật liệu

  • 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)

Thiết bị

Retort stand and clamp Weights or books for applying pressure Ruler

Quy trình

1

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

5 phút
2

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

5 phút Do not force the syringe
3

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

15 phút
4

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

5 phút
5

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

8 phút

Kết quả dự kiến

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.

Dọn dẹp

Return apparatus to storage. Dispose of graph paper drafts.

Frequently Asked Questions

What is the objective of Xác Minh Định Luật Boyle?
Xác minh định luật Boyle (P₁V₁ = P₂V₂) bằng cách đo thể tích khí bị nhốt ở các áp suất khác nhau.
How difficult is Xác Minh Định Luật Boyle?
This experiment is rated as Intermediate (High School). It takes approximately 40 minutes to complete.
What safety precautions are needed for Xác Minh Định Luật Boyle?
Key safety precautions include: Do not apply excessive pressure to glass apparatus; Ensure all connections are airtight.
What materials are needed for Xác Minh Định Luật Boyle?
The main materials required are: Boyle's law apparatus or large syringe, Pressure gauge, Rubber tubing, Graph paper.
What results should I expect from Xác Minh Định Luật Boyle?
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.