Question

What is the ratio of the volumes occupied by 2 moles of $O_2$ and 2 moles of $O_3$ at standard temperature and pressure ?

• A. $2:3$
• B. $1:1$
• C. $3:2$
• D. $4:6$

Answer 1

The correct option is B $1:1$

Since the number of moles, temperature and pressure are fixed for both the gases, their volumes will be the same too. This is a direct consequence of Avagadro's law.
So, both would have the same volume.