Gas Laws

Question 1

Explain the pressure temperature law

Answer 1

If temperature is increased,
Kinetic energy and therefore speed of particles will increase.
Particles collide with walls both harder and more often.
So average force on container walls will increase.
Since P=F/A, pressure will increase
So when temperature increases, pressure increases

Question 2

Explain the pressure volume law

Answer 2

If the volume is decreased
Particles will hit the container walls more quickly often
At the same time the area of the walls is decreased
So average force on walls will increase
Since P=F/A, pressure increases

Question 3

Explain the volume temperature law

Answer 3

If temperate is increased
Kinetic energy and speed of particles will increase
Particles collide with walls harder
If pressure is to remain constant, the increased force must be spread over a greater area. P=F/A
The volume of the container must therefore increase
So when temperature increases, volume increases