LAWS OF CHEMICAL COMBINATIONS
LAWS OF CHEMICAL
COMBINATIONS Law of Conservation of Mass (Given by Antoine
Lavoisier in 1789). It states that matter (mass) can neither be created nor
destroyed . Law of Definite
Proportions or Law of Constant Composition: This law was
proposed by Louis Proust in 1799, which states that: 'A chemical compound
always consists of the same elements combined together in the same ratio,
irrespective of the method of preparation or the source from where it is
taken'. Law of Multiple Proportions Proposed by Dalton
in 1803, this law states that: 'When two elements
combine to form two or more compounds, then the different masses of one
element, which combine with a fixed mass of the other, bear a simple
ratio to one another'. Gay Lussac’s Law
of Gaseous Volumes (Given by Gay Lussac in 1808.) According to this
law when gases combine or are produced in a chemical reaction they do so
in a simple ratio by volume provided all gases are at same temperature
and pressure. e.g.H 2 (g) …