Question

Which of the following compounds will behave MOST like an ideal gas at higher pressures? a) He b) SO2 c) H2 d) N2 e) F2

Answer 1

Helium (He)- (a) is most likely to behave like an ideal gas at higher pressures due to its minimal intermolecular forces and very small atomic radius, which make its behavior under such conditions closer to the assumptions of the ideal gas law.

Step-by-step explanation:

• The compound that will behave most like an ideal gas at higher pressures is helium (He).
• Ideal gas behavior assumes that there are no intermolecular forces between the gas particles and that the volume of the gas particles themselves is negligible compared to the container.
• Helium, being a noble gas with a single atomic structure, has minimal intermolecular forces and a very small atomic radius, making it less likely to deviate from ideal behavior even at higher pressures.
• Furthermore, helium's atoms are significantly smaller than molecules like SO₂, H₂, N₂ or F₂, which means that the volume the particles take up is less significant.
• Real gases such as SO₂ and F₂ have stronger intermolecular forces due to their larger size and molecular structure, which will cause these gases to deviate from ideal gas behavior more than helium under the same conditions.
• Therefore, amongst the options provided, helium will behave most similarly to an ideal gas at higher pressures.

Answer 2

Option A

He

Step-by-step explanation:

Ideal gas: refers to a type of gas having a perfectly elastic collisions between atoms or molecules with no intermolecular attractive forces. Helium is the most ideal gas amongst the given options because it exists as a single atom, with a low boiling point with a very low or even zero intermolecular interaction.

SO2 is less volatile having more intermolecular interaction (van da waal interaction, this is the reason for it's deviation from ideality).

H2 almost behaves like an idea gas because it has a low intermolecular interaction not zero.

N2 is not an ideal gas

F2 is not the most ideal gas.