Question

Four $1$ liter flasks are separately filled with the gases $H_2,He,O_2$ and $O_3$ at the same temperature and pressure. The ratio of total number of atoms of these gases present in the different flask would be:

• A. 1 : 1 : 1: 1
• B. 1 : 2 : 2: 3
• C. 2 : 1 : 2 : 3
• D. 3 : 2 : 2 : 1

Answer 1

The correct option is C 2 : 1 : 2 : 3

Since volume, temperature, and pressure are constant, the number of moles of all the gases will be the same. Hence, the number of molecules of all the gases is also the same.

$\therefore$ The ratio of the number of gas atoms in four flasks will be equal to the ratio of the number of atoms in each molecule of four gases.

So, the correct option is $C$.