[devvaibhav]

Q:- What will be the volume occupied by 1 mole of a (i) mono-atomic gas, and (ii) diatomic gas at NTP?

My answer:- As the gases are at NTP volume of 1 mole of both of them should be 22.4 lt. I think the mono-atomic and diatomic don't matters here as the lowest free state of the gas is a single atom and two atoms.

Book's Answer:- For mono-atomic gases, 1 mole atom occupies 22.4 lt.(s) at NTP, and for diatomic gases, 1 mole atom occupies 11.2 lt.(s) at NTP, as 1 mole of O₂ contains 2 moles of O.

I would like to focus on the 1 mole atom thing. I think the atom thing don't matters here. See this too:


Is my thinking right or wrong?

[sjb]

Q:- What will be the volume occupied by 1 mole of a (i) mono-atomic gas, and (ii) diatomic gas at NTP?

My answer:- As the gases are at NTP volume of 1 mole of both of them should be 22.4 lt. I think the mono-atomic and diatomic don't matters here as the lowest free state of the gas is a single atom and two atoms.

Book's Answer:- For mono-atomic gases, 1 mole atom occupies 22.4 lt.(s) at NTP, and for diatomic gases, 1 mole atom occupies 11.2 lt.(s) at NTP, as 1 mole of O₂ contains 2 moles of O.

I would like to focus on the 1 mole atom thing. I think the atom thing don't matters here. See this too:

Is my thinking right or wrong?

Both are right, when you mention a mole it's probably also best to clarify which types of particles you are talking about. If something naturally comes in pairs, like dinitrogen, then of course there will be twice as many individuals as pairs in any given sample size.

[Borek]

Question is ambiguously worded. Mole of gas occupies 22.4 L at STP. Mole of atoms is not equivalent to mole of gas, as it can be either a mole of gas, or some fraction of mole (N₂, O₃, P₄ ...).

[billnotgatez]

PV=nRT

[AWK]

Book answer concern other question:
_{Q:- What will be the volume occupied by 1 mole of atoms in: a (i) mono-atomic gas, and (ii) diatomic gas at NTP?}

[devvaibhav]

Thanks man got it..