Gases- Boyle’s Law- J-Tube

Boyle’s Law- J-Tube

Description: Video examining the relation between gas volume and pressure. Shows the addition of mercury metal to a J-shaped tube decreases the volume of air inside the tube. The direct relationship of Boyle’s law is shown.

This demonstration is also available on JCE “Chemistry Comes Alive!” Vol. 2 CD-Rom.

Source: JCE Videos “Chemistry Comes Alive!”

Year: 1999  Vol: 2 Page: 1311

Keywords: Boyle’s Law, J-Tube, Air volume, Gas, Mercury

Rating:

Hazard: High if done in person

• Aquatic toxicity hazard
• Acute toxicity hazard
• Inhalation hazard
• Central nervous system toxicity hazard
• Reproductive toxicity hazard
• Electric shock hazard

Effectiveness: Good

• Good connection from demo to course material
• Low failure rate
• Time to results is low
• Effects are observable with guidance
• Mild effects are seen by audience

Difficulty: Medium

• Handling of mercury liquid
• Some intermediate steps to results
• Sequential manipulations required
• Avoid exposure to vapor
• Demos in which toxic reagents in use
• Demos in which a display is used

Safety Precautions:

• Secondary spill containment required
• Mercury spill kit on hand
• Perform in a well-ventilated area
• Avoid exposure to vapors
• Gloves required
• Eye protection required
• Prevent release of reagents to the environment
• Use UL approved three-prong plug and outlet

Class: Physical Chemistry, Gas Laws

Division: General

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