Sarasua CHM 2045 Lecture Notes Tro Chapter 5 Sp2015
J.A.C. Charles 1787, a French mathematician and physicist
observed the variation of volume and temperature when amount
of gas was fixed and pressure was constant.
Figure 5.10 p. 202 As T increases, gas expands (V increases).
As T decreases, gas contracts (V decreases). You can see that all
lines (data is linear) can be extrapolated to absolute zero of
temperature 0.00K = -273.15ºC.
There is a direct relationship between volume & temperature.
For Charles’ Law, V and T vary while P,T and n are constant.
Rearrange the Ideal gas Equation to get what changes (V and T)
on left and what stays constant on right (P,n,R):