11. One litre of an unknown gas weighs 1.25 gm at N.T.P. which of the

1.	11. One litre of an unknown gas weighs 1.25 gm at N.T.P. which of the following gas pertains to the abovedata -(A) CO2(B) NO2(C) N2(D) 02
Answer» Volume at STP of one more is 22.4 l, and the volume at NTP of one mole is 24 l. As per the Charles law, the formula is V1 / T1 = V2 / T2. When 24 l has 1 mole then 1 l will have 1 / 24 moles which is equal to 0.04 moles. And the molar mass of oxygen comes to 32 g.

11. One litre of an unknown gas weighs 1.25 gm at N.T.P. which of the following gas pertains to the abovedata -(A) CO2(B) NO2(C) N2(D) 02

Answer»

Volume at STP of one more is 22.4 l, and the volume at NTP of one mole is 24 l.

As per the Charles law, the formula is V1 / T1 = V2 / T2.

When 24 l has 1 mole then 1 l will have 1 / 24 moles which is equal to 0.04 moles.

And the molar mass of oxygen comes to 32 g.