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# Properties of Gases

TermDefinition
Gas Substance that has no well defined boundaries but diffuses rapidly to fill any container in which it is placed
Boyle's Law states at a constant temperature, the volume of a fixed mass of gas is inversely proportional to its pressure
Charles' Law States at a constant pressure, the volume of a fixed mass of gas is directly proportional to its temperature measured on the kelvin scale
Gay lussacs law In a reaction between gases the volumes of the reacting gases and the volumes of any gaseous products are in the ratio of small whole numbers provided the volumes are measured at the same temperature and pressure
Avagadro's law States that equal volume of gases contain equal numbers of molecules, under the same conditions of temperature and pressure
Molar volume At standard temperature and pressure (S.T.P), one mole of any gas occupy's a volume of 22.4 litres
Ideal Gas Is a gas that obeys all the assumptions of the kinetic theory of gases under all conditions of temperature and pressure
Real gases differ from ideal gases 1) the forces of attraction and repulsion 2) the volume of the molecules is not negligible (except at high pressure)
Equation of state for an ideal gas pV=nRT where T= temperature in kelvin P= Pressure R= Universal Gas constant n= number of moles V= volume
Created by: mrs kennedy

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