1. The Historical Gas Laws
Boyle’s Law
Otto von Guericke (1602 – 1686)
(Vacuum Pump – 1654)

2. Robert Boyle (1627 – 1691)

5. Charles’ or Gay-Lusacc’sLaw
Jacques Charles (1746 – 1823)
Joseph Louis Gay-Lussac (1778 – 1850)

6. Temp [oC]
Volume [cm3] (P=1 atm)
Volume [cm3]
(P = 2 atm)
26.85
24430
12120
36.85
25264
12544
46.85
26094
12967
56.85
26929
13389
66.85
27759
13810
76.85
28588
14229

7. Ideal Gas Temperature Scale
Single Fixed Point
Triple Point of Water K
William Thomson, Lord Kelvin
(1824 – 1907)

8. Number of Moles
Amedeo Avogadro ( )
Equal Volumes of Gas Contain Equal Numbers of “Particles”