# The Temperature - The Temperature-Volume Relationship...

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The Temperature-Volume Relationship: Charles's LawThe relationship between gas volume and temperature was discovered in 1787 by Jacques Charles (1746-1823)The volume of a fixed quantity of gas at constant pressure increases linearly with temperatureThe line could be extrapolated to predict that gasses would have zero volume at a temperature of -273.15°C (however, all gases liquefy or solidify before this low temperature is reachedIn 1848 William Thomson (Lord Kelvin) proposed an absolute temperature scale for which 0°K equals -273.15°CIn terms of the Kelvin scale, Charles's Law can be restated as:The volume of a fixed amount of gas maintained at constant pressure is directly proportional to its absolute temperatureDoubling the absolute temperature causes the gas volume to doubleThe value of constant depends on the pressure and amount of gasThe Quantity-Volume Relationship: Avogadro's LawThe volume of a gas is affected not only by pressure and temperature, but by