Question

Who gave the statement of the law of multiple proportions?

Answer 1

Law of multiple proportions

• The statement of the law of multiple proportions is given by chemist John Dalton.
• When two elements combine to make more than one compound, the weights of one element combined with a fixed weight of the other are in a ratio of small whole numbers, according to the Law of Multiple Proportions.

Example

• Hydrogen combines with oxygen to form two compounds that is water and hydrogen peroxide.
• $$\begin{gathered} \text{Hydrogen +oxygen→water} \\ 2\text{g 16 g 18 g} \\ \text{Hydrogen +oxygen→Hydrogen peroxide} \\ 2\text{g 32 g 34 g} \end{gathered}$$
• The mass of oxygen $16\text{g}$ in the water and $32\text{g}$ in hydrogen peroxide combined with $2\text{g}$ of hydrogen bear a simple ratio that is $16:32\text{or}1:2$.