CHARLES’S LAW APPARATUS

Charles’s Law Apparatus is designed for the demonstration of the relationship between volume and temperature of a gas at constant pressure. It consists of a borosilicate glass U-shaped tube with a graduated bulb, a third limb, rubber tubing with pinch clip, and a tall-form beaker with stirrer for controlled heating.

• Glass Tube – U-shaped borosilicate glass tube, approximately 15 mm diameter
• Plain Arm – 220 mm long
• Graduated Arm – 20 mm long, graduated 25–35 × 0.2 mL, terminating in a 37 mm diameter bulb
• Third Limb – Approximately 185 × 6 mm, attached at right angles to the U-tube
• Connection – Short glass tube through rubber stopper with rubber tube and pinch clip
• Heating Bath – Tall-form beaker of 1000/2000 mL capacity with stirrer
• Material – All glass parts made of borosilicate glass
• Application – Demonstration of Charles’s Law and the relationship between gas volume and temperature at constant pressure.