For example, you know that the ideal gas law looks like this
Let's say that a have number of moles of gas that occupies a volume
If I keep the number of moles of gas unchanged, i.e. I don't add or remove any molecules of gas from my sample, but change the volume to
If I want to express the number of moles of gas I have using the ideal gas lw equation, I can write
This means that I get
Both the ideal gas law and the combined gas law can be used to describe the behavior of an ideal gas under certain conditions for pressure and temperature.
However, the ideal gas law still stands if all the parameters change, whereas the combined gas law can only be used when the number of moles of gas is constant when going from one set of conditions to another.
Each of the gas laws describes the behavior of an ideal gas when at least one parameter of the ideal gas law equation is constant
- Boyle's Law
#-># #n#and #T#constant;
- Charles' Law
#-># #P#and #n#constant;
- Avogadro's Law
#-># #P#and #T#constant;
and so on.