HSC Together Year 11 Chemistry: Introduction to Gas Laws

Chemistry

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Introduction to Gas Laws

How do Gases Change with Different Conditions?

This post will go through the basic gas laws that describe the relationship between the volume of a gas and temperature, pressure and the number of moles for Prelim Chemistry.

According to the syllabus, you will need to be able to:

  • Conduct investigations and solve problems to determine the relationship between the Ideal Gas Law and:
    • Gay-Lussac’s Law (temperature)
    • Boyle’s Law
    • Charles’ Law
    • Avogadro’s Law

The Gas Laws

There are four main laws and the combined law. The laws and the relationships they describe (assuming the other factors are constant) are:

Gay Lussac’s Law -> pressure and temperature (volume and moles constant)

P1/T1 = P2/T2

Boyle’s Law -> pressure and volume (temperature and moles constant)

P1V1 = P2V2

Charle’s Law -> volume and temperature (pressure and moles constant)

V1/T1 = V2/T2

Avogadro’s Law -> volume and moles (pressure and temperature constant)

V1/n1 = V2/n2

Combined Gas Law

(P1V1)/T1 = (P2V2)/T2

Note that these are simplified descriptions of the laws and it is advised you go through them in a little more depth.

The video below will better describe these concepts which will help you with understanding how to use them.

Looking for more resources? Check out our other Chemistry resources here!

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