Question

Two gas samples (in two different container) are having same molecular masses but different number of moles at room temperature then

• A. Their individual pressures must be different
• B. Their diffusion rates are different
• C. The number of molecules are same
• D. None of these

Answer 1

The correct option is A Their individual pressures must be different

$PV=\frac{m}{M}RT$ or $PV=nRT$ as they have same $M$.

Now, $n=P\left(\frac{V}{RT}\right)$

Volume of containers may be different or their individual pressures must be different as temperature is the same for both.