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 : 2
• C. 1 : 1
• D. 3 : 2

Answer 1

The correct option is A 2 : 3

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, their ratio will 2 : 3.