Question

What is the ratio of the volumes occupied by $2$ moles of $O_2$ and $3$ 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 $1:1$

If 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, their ratio will $2:3$.