Question

Which law was given by Antoine L Lavoisier?
A.Laws of multiple proportion
B.Law of conservation of mass
C.Both A and B
D.None of the above

Answer 1

Antoine L Lavoisier is a famous chemist who has contributed a lot to the field of advanced sciences. He was the scientist who experimentally determined that combustion and respiration are caused by chemical reactions.

Complete Step-by-Step Solution:
The laws that are stated in the two options are extremely important for understanding the basic concepts of chemical sciences. These laws can be briefly discussed as follows:
1.Laws of multiple proportion:
According to the law of multiple proportion, when one or more compounds are formed because of the reaction between two elements, then the numerical ratio of the masses of the second element which combine with an affixed mass of the first element will always be a ratio of small whole numbers. This law was proposed by John Dalton and is also known as Dalton’s Law.
2.Law of conservation of mass:
The Law of conservation of mass states that mass can neither be created nor be destroyed. In simpler terms, it says over the course of a reaction, the total mass of the reactants before the start of the reaction, is equivalent to the total mass of products at the end of the reaction. This law was proposed by Antoine L Lavoisier.
Hence, Option B is the correct option.

Note: Lavoisier proposed the law of definite proportions, which states that elements combine to form compounds in well-defined proportions, instead of mixing in random proportions. The law of conservation of mass is used in almost every aspect of analytical chemistry. But the most widespread application of this law is when we balance chemical equations. The total mass of the reactants is equivalent to the total mass of the products.