# 9.7: Charles's Law

While Boyle's Law explores the effect of pressure on the volume of a gas, Charles' Law examines the effect of temperature. Again you are probably familiar with the fact that increasing the temperature of a gas will cause the gas to expand. This effect was first studied quantitatively in 1787 by Jacques Charles (1746 to 1823) of France. Typical data from such an experiment are given in Table $$\PageIndex{1}$$ . You can see that for 0.0466 mol H2(g) at constant pressure, a 50°C rise in temperature produces a 0.18-liter increase in volume, whether the temperature increases from 0.0 to 50.0° or from 100.0 to 150.0°C. While this experiment shows that temperature and volume are interrelated, it has deeper, more significant implications as well.

TABLE $$\PageIndex{1}$$ Variation in the Volume of H2(g) with Temperature.

Temperature (degree C) Volume (L)
Data for 0.0446 mol H2(g) at 1 atm(101.3 kPa)
0.0 1.00
50.0 1.18
100.0 1.37
150.0 1.55
Data for 0.100 mol H2(g) 1 atm (101.3 kPa)
0.0 2.24
50.0 2.65
100.0 3.06
150.0 3.47