In
1787 Jacques Charles investigated the effect of change of temperature on the volume of a fixed amount of gas at constant pressure. He established a generalisation which is called the Charles' Law. It states that:Posts
Charles Law
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At constant pressure, the volume of a fixed mass of gas is directly proportional to the Kelvin temperature of absolute temperature.
If the absolute temperature is doubled, the volume is doubled.
Charles Law may be expressed mathematically as
V ∝ T
V=kT (P, n are constant)
where k is a constant.
or
V/T = k
If V₁, T1, are the initial volume and temperature of a given mass of gas at constant pressure and V₂, T₂ be the new values, we can write
V 1/T 1 =k= V 2 /T2
Using this expression, the new volume V₂, can be found from the experimental values of V₁, T1 and T2
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