# Gay Lussac's Law

Course:
Chemistry

For a gas, temperature and pressure are directly proportional. When you keep everything else constant, as the temperature of a gas goes up, its pressure goes up. As the temperature of a gas goes down, its pressure goes down. Gay-Lussac’s Law says that when the volume and amount of gas is constant, pressure and temperature are directly proportional. P ∝ T You can write this mathematically as P = kT

For a gas, temperature and pressure  are directly proportional.  When you keep everything else constant, as the temperature of a gas goes up, its pressure goes up.  As the temperature of a gas goes down, its pressure goes down.

Gay-Lussac’s Law says that when the volume and amount of gas is constant, pressure and temperature are directly proportional.

You can write this mathematically as

P ∝ T  or P = kT, where k is a proportionality constant

This video includes two example problems worked in full. If you need more practice for a test, we have a Gas Laws Practice Test available for purchase.

Video: Gay-Lussac’s Law

Handout: Video Notes Worksheet