Question

The volume of 10 moles of an ideal gas is 1 litre at 27${}^{o}C$ and 1 atmospheric pressure. What is the volume (in litres) of 20 moles of same gas at same temperature and pressure?

• A. 2
• B. 4
• C. 1
• D. 8

Answer 1

The correct option is A 2

According to Avagadro law, equal volumes of all gases will have an equal number of moles.

The volume of 10 moles of an ideal gas is 1 litre at ${27}^0$C and 1 atmospheric pressure.

At same temperature and pressure,

$\frac{V_1}{V_2}=\frac{n_1}{n_2}$

So, the volume of 20 moles of same gas at same temperature and pressure will be $2$ litres.

Hence option A is correct.