7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is (Atomic weights of C, N and O are 12, 14 and 16 respectively)

Question

7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is (Atomic weights of C, N and O are 12, 14 and 16 respectively) (A) NO (B) N2O (C) CO (D) CO2

Tardigrade Admin · Accepted Answer

5.6 L of a gas at STP weights = 7.5 g 22.4 L of a gas weights =(22.4×7.5/5.6)=30 g ∴ Molecular weight is 30 g and the gas is NO.

Q. 7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is (Atomic weights of C, N and O are 12, 14 and 16 respectively)

$NO$

$N_{2} O$

$CO$

$C O_{2}$

$5.6 L$ of a gas at STP weights $= 7.5 g$
$22.4 L$ of a gas weights $= \frac{22.4 \times 7.5}{5.6} = 30 g$
$∴$ Molecular weight is 30 g and the gas is $NO$ .

Q. 7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is (Atomic weights of C, N and O are 12, 14 and 16 respectively)

NO

N2​O

CO

CO2​

5.6L of a gas at STP weights =7.5g 22.4L of a gas weights =5.622.4×7.5​=30g ∴ Molecular weight is 30 g and the gas is NO.

$NO$

$N_{2} O$

$CO$

$C O_{2}$

$5.6 L$ of a gas at STP weights $= 7.5 g$
$22.4 L$ of a gas weights $= \frac{22.4 \times 7.5}{5.6} = 30 g$
$∴$ Molecular weight is 30 g and the gas is $NO$ .