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- Title
THE LAW OF GASES.
- Abstract
The article presents information on an experiment conducted to verify Charles Law by noting the changes in the pressure exerted by a confined gas, when it is subjected to variations in temperature. According to Charles Law if the volume of a confined gas is kept constant, its pressure will vary directly as its absolute temperature. Absolute Zero is the point on the temperature scale at which all molecular motion has stopped and at this point the pressure exerted by the gas also drop to zero. Therefore, when plotting the pressure-temperature readings of a Charles Law experiment on graph paper it is possible to extend downward the curve connecting the points until it reaches 0 pressure. For the experiment a quantity of air is enclosed in a stoppered flask to which is attached a mercury U-tube manometer for measuring the pressure of the gas. The flask is heated gradually in a water bath, and the manometer readings are recorded as the water temperature increases. A graph is then drawn, plotting manometer readings against temperature.
- Subjects
CHARLES' law; TEMPERATURE; PRESSURE; THERMAL properties of gases; MANOMETERS; PHYSICAL &; theoretical chemistry; PRESSURE balances; IDEAL gas law; AVOGADRO'S law
- Publication
Science Education, 1948, Vol 32, Issue 4, p349
- ISSN
0036-8326
- Publication type
Article