Question

Hola Brainlians !!!

Explain the experiment in detail performed by Joseph Proust to validiate the law of definite proportions

Class - 11th
Chapter - Some basic concepts of chemistry ​

Answer 1

Answer:

Proust showed that cupric (copper II) carbonate always had 5.3 parts copper to 1 part carbon to 4 parts oxygen. These experiments led to the Law of Definite Proportion that allows us to know with certainty that any chemical compound is always made from the same ratio of elements.

Answer 2

Law of Definite Proportions : The ratio of the masses of elements in any compound is constant regardless of its source or its preparation i.e., a given compound always contains exactly the same proportion of elements by weight it is sometimes also referred to as law of constant composition. This law was given by a French chemist, Joseph Louis Proust between 1798 and 1804.

He took two different samples of copper [ II ] carbonate [ the natural one and the other one made by him ] and tried determining the composition of each of the elements in the two compounds and came to a conclusion that the composition was same in both samples.

Thus, he jumped to a conclusion that a compound always contains exactly the same proportion of elements by weight. Therefore, this law is known as $\bold {Law \; of \; Definite \; Composition}$.