Question

The volume of 32g of Oxygen at STP is 22.4L.

• A. True
• B. False

Answer 1

The correct option is A True

• The volume of 32g of Oxygen at STP is 22.4L.
• 1 mole of a substance is defined as the quantity of a substance equal to its molecular mass in grams.
• 1 mole of a substance= 6.022×10²³ molecules.
• Volume occupied by 1mol gas at STP =22.4L
• Given mass of Oxygen= 32g

The molecular mass of Oxygen (O₂) = 16+ 16=32g

Therefore volume at STP = $\frac{\mathrm{Given}\mathrm{mass}}{\mathrm{molecular}\mathrm{mass}}$ ×22.4L

= $\frac{32}{32}$ ×22.4 L =22.4L

Hence the volume of 32g of Oxygen at STP is 22.4L is a true statement.