The Gas Laws
- Created by: Anastacia Hannay
- Created on: 30-10-17 01:24
Boyle's Law
Boyle's law states that for a given amount of gas held at a constant temperature; volume (V) inversely varies with pressure (P)
Equations for Boyle's law include:
P x V = Constant (k)
P1 x V1 = P2 x V2
Worked Example
An observation balloon is filled with helium gas to a volume of 40L at a pressure of 1 atm. Calculate the volume when the balloon rises to an altitude where the pressure is 0.2 atm, assuming the temperature remains constant.
Solution
P1 x V1 = P2 x V2
Where V1 = 40L V2 = ? P1 = 1 atm P2 = 0.2 atm
So, 40 x 1 = 0.2 x V2
V2 = 40 x 1 / 0.2
= 200L
Therefore the volume of the balloon is 2 x 10^2L at the higher altitude
Charle's Law
Charle's Law states that a given amount of gas at constant temperature, the volume of the gas is inversely proportional to its pressure.
Basically if the volume of a fixed amount of gas at constant temperature is halved, the pressure will double.
Equations for Charle's law include:
Volume / Temperature = Constant (k)
V1 / T1 = V2 / T2
Unit Conversions:
Temperatue is expressed in Kelvin (K)
…
Comments
No comments have yet been made