chemistry / Physical Chemistry / free
Gas Laws
Change a container and watch a microscopic model become pressure.
Follow the cause1 / 3
Particles collide with the container. Pressure is the macroscopic result of microscopic momentum transfers at the walls.
idealized particle modeln = 1 mol · PV = nRT
temperature300 K
volume25 L
pressure99.8 kPa
At 300 K in 25 L, PV = nRT gives 99.8 kPa for 1 mol of ideal gas. Temperature raises particle speed (in proportion to √T) and collision energy; volume changes how often particles hit each area of wall.
A gas is represented here as moving particles. It is a useful model, not a literal picture of what a gas looks like; real gases add attractions, finite particle volume, and non-equilibrium effects.
04 / PRACTICE
0 / 3 checkedMake the chemistry yours.
Answer from the model, then use the explanation to connect the particle picture to the chemical rule.
CHECK 1 / 3