Module 3 Intro

Module 3—Behaviour of Gases

Lesson Summary

 

In this lesson you explored the following question:

• Is it possible to predict the quantity of a gaseous substance involved in a chemical reaction?

Joseph Gay-Lussac developed the theory that gases react in distinct proportions. When gases are at similar temperatures and pressures, the proportions are identical to the volumes of each gas involved in the reaction.

 

This theory of combining volumes of gases was further supported by Avogadro’s law that extends an understanding of this relationship to the moles of each substance involved. This law states that when temperature and pressure are kept constant, equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.

 

With this information, you can analyze and predict the quantities of gases involved in chemical reactions. In Unit D you will further your understanding of quantitative relationships in chemical reactions.

 

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