Boyle’s Law Pressure versus Volume

Boyle’s Law: P and V  Discovered by Irish chemist, Robert Boyle  Used a J-shaped tube to experiment with varying pressures and their effects on the volume of an enclosed gas.

Pressure versus Volume  as one increases, the other decreases  inversely proportional  pressure is caused by moving molecules hitting container walls  If volume is decreased and the # of molecules stays constant, there will be more molecules hitting the walls per unit

Boyle’s Law: P and V  Boyle’s Law states that the volume of a fixed mass of gas varies inversely with pressure at a constant temperature.  k = VxP  k is a constant for a certain sample of gas that depends on the mass of the gas and the temperature.  What kind of graph is V vs. P?

Boyle’s Law

 If we have a set of new conditions for the same sample of gas, they will have the same k so:

Example: Boyle’s Law Consider a 1.53-L sample of gaseous SO 2 at a pressure of 5.6 x 10 3 Pa. If the pressure is changed to 1.5 x 10 4 Pa at constant temperature, what will be the new volume of the gas?