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Charles' Law Mounted Class Set

Charles' Law Mounted Class Set
Product Code :  HPG-265-110Price:  £186.88 /10pk(Exc. 20% VAT)Saver Points: 372

Brand:  PSU BASE


Comprises a capillary tube, sealed at one end, with graduated scale from 0 to 200mm, mounted on a plastic former which also has a 0 – 70°C thermometer mounted alongside the tube.

The glass tube includes a small bead of coloured oil, which has already been injected into the tube at about the 50mm mark, and the back plate has a hole at the top to allow fixing to a retort stand, so that the apparatus can be suspended in a tall beaker of water (not included). By heating the water and taking a temperature and scale reading every 30 seconds, a graph of the results can be plotted. Through a line of best fit and extrapolation absolute zero can be demonstrated. The straight line supports Charles’ Law, demonstrating that volume of a gas is directly proportional to its temperature, provided the pressure is kept constant. (In this case the pressure is atmospheric pressure). The Kelvin scale may then be introduced.

Dimensions: Glass tube, 245mm long; Overall length, 350mm.

Available individually or as a class set of 10 in a Gratnells tray.

Replacement capillary tubes with oil beads are also available, sold as a pack of 10.

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