Vapour density of gas is 11.2. Volume occupied by 2.4g of this at STP will be:

• A. 11.2L
• B. 2.24L
• C. 22.4L
• D. 2.4L

The vapour density of a gas is a key factor in determining its volume at standard temperature and pressure (STP). Given that the vapour density is 11.2, we can use this information to find the volume occupied by 2.4 grams of the gas.

Understanding Vapour Density

Vapour density is defined as the mass of a certain volume of gas compared to the mass of an equal volume of hydrogen at the same temperature and pressure. The formula to find the volume of a gas at STP is:

Formula

Volume (L) = (Mass (g) / Molar Mass (g/mol)) × 22.4 L

Calculating Molar Mass

The molar mass can be derived from the vapour density:

• Molar Mass = Vapour Density × 2
• Molar Mass = 11.2 × 2 = 22.4 g/mol

Finding the Volume

Now, substituting the values into the volume formula:

• Volume = (2.4 g / 22.4 g/mol) × 22.4 L
• Volume = 2.4 L

Final Answer

The volume occupied by 2.4 grams of this gas at STP is 2.4L. Therefore, the correct option is D. 2.4L.