I request someone to clear the following doubt of mine:
Consider a closed room of volume 100 litres at STP. 1 mole of a gas (say oxygen) is introduced inside the room. I can conclude the following by my knowledge:
1) Avogadro's Law states that 1 mole of any gas at STP will occupy 22.4 litres. Hence, V[gas] = 22.4 litres.
2) Due to diffusion, the gas will move from a region of high concentration to a region of low concentration. Hence, the gas will occupy the volume of the entire room .Therefore, V[gas] = 100 litres.
Since, 22.4 litres \(\neq\) 100 litres, something mus be wrong with my line of reasoning. Could anyone kindly point out the fallacy?