Q15P - Chemistry: Molecular Nature Of Matter And Change

Question

Which of the following scenes illustrate(s) the fact that compounds of chlorine (green) and oxygen (red) exhibit the law of multiple proportions? Name the compounds.

 

Step-by-Step Solution

Answer

Scene B exhibit the law of multiple proportions. Compounds formed are dichlorine monoxide and chlorine dioxide.

Step 1: Law of Multiple Proportions

According to the law of multiple proportions, when two elements combine to form more than one compound, the ratio of the masses of those compounds will always be in small whole numbers.

Step 2: Explanation

Here in picture b, two compounds of Cl and O are formed as are dichlorine monoxide Cl₂O and chlorine dioxide ClO₂:

	Compound I	Compound II
Mass of Cl	71	35.5
Mass of O	16	32
g of Cl/ g of O	4.43	1.10

Ratio of Mass of Cl in two compounds =  $\frac{\mathbf{R}\mathbf{a}\mathbf{t}\mathbf{i}\mathbf{o}\mathbf{ }\mathbf{i}\mathbf{n}\mathbf{ }\mathbf{c}\mathbf{o}\mathbf{m}\mathbf{p}\mathbf{o}\mathbf{u}\mathbf{n}\mathbf{d}\mathbf{ }\mathbf{I}}{\mathbf{R}\mathbf{a}\mathbf{t}\mathbf{i}\mathbf{o}\mathbf{ }\mathbf{i}\mathbf{n}\mathbf{ }\mathbf{c}\mathbf{o}\mathbf{m}\mathbf{p}\mathbf{o}\mathbf{u}\mathbf{n}\mathbf{d}\mathbf{ }\mathbf{I}\mathbf{I}}\mathbf{=}\frac{\mathbf{4}\mathbf{.}\mathbf{43}}{\mathbf{1}\mathbf{.}\mathbf{1}}\mathbf{=}\mathbf{4}$

As the ratio is coming as whole number that means it is following law of multiple proportions.