State Gay-Lussac's law and illustrate the law with one chemical reaction.
Gay-Lussac's law of combining volumes
The law states that when gases react, they do so in volumes which bear a simple whole number ratio to one another and to the volumes of the gaseous products, provided the temperature and pressure remain constant.
Illustration with a chemical reaction
Consider the formation of ammonia:
N2(g) + 3H2(g) → 2NH3(g)
Here 1 volume of nitrogen combines with 3 volumes of hydrogen to give 2 volumes of ammonia. The ratio 1 : 3 : 2 is a simple whole number ratio, which illustrates the law.
(The reaction H2(g) + Cl2(g) → 2HCl(g), with ratio 1 : 1 : 2, is also acceptable.)
The law states that when gases react, they do so in volumes which bear a simple whole number ratio to one another and to the volumes of the gaseous products, provided the temperature and pressure remain constant.
Illustration with a chemical reaction
Consider the formation of ammonia:
N2(g) + 3H2(g) → 2NH3(g)
Here 1 volume of nitrogen combines with 3 volumes of hydrogen to give 2 volumes of ammonia. The ratio 1 : 3 : 2 is a simple whole number ratio, which illustrates the law.
(The reaction H2(g) + Cl2(g) → 2HCl(g), with ratio 1 : 1 : 2, is also acceptable.)