Law of gaseous volumes

This law put forward by Gay Lussac states that 'whenever gases react together under constant conditions of temperature and pressure, the volumes of the reacting gases as well as products (gases) bear a simple whole number ratio between themselves'.

For example, in the reaction,

illustrating gay lussac s law

The ratio of volumes of hydrogen, chlorine, and hydrogen chloride is 1:1:2 (a simple ratio).

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