Q11P - Chemistry: Molecular Nature Of Matter And Change

Question

Why was it necessary for separation techniques and methods of chemical analysis to be developed before the laws of definite composition and multiple proportions could be formulated?

Step-by-Step Solution

Answer

As these laws talk about the composition or ratio of different components of a compound hence it was necessary to develop the separation techniques and methods of chemical analysis so that the actual composition would be known then only it became possible to find out these rules.

Step 1: Laws of definite composition

The Law of definite composition stated that chemical compounds are formed of constant and defined ratios of elements, as determined by mass.

Step 2: Laws of multiple proportions

According to the law of multiple proportions, if two elements form more than one compound, then the ratios of the masses of the second element which combine with a fixed mass of the first element will always be ratios of small whole numbers.

Step 3: Why separation techniques required

Both of these laws talk about the composition or ratio of different components of chemical compounds hence it was necessary to know the composition of a compound to formulate these laws.