Question

5. One group of students in an int arguing that the pressu aroup of students in an introductory chemistry course is arguing that the pressures of a con- Chudrogen gas and a container of sulfur dioxide gas, under the following conditions, cannot equal. Both containers are sealed, with equal volume, at the same to that the pressures cannot be equal because a sulfur dioxide molecule has a much larger han diatomic hydrogen, and therefore exerts a much greater force when it hits the walls of stainer, They therefore conclude that the pressure of sulfur dioxide in the container should roer than that of hydrogen. Their intuition seems to be really good. They simply ask, "Would rather be hit by a ping-pong ball or a baseball?" They claim these are real and not ideal gases, so The ideal gas law is not relevant. Please write a note to them below, congratulating them if they are right, or, if they're not, explaining where they have gone wrong in their logic.

Answer 1

5) According to the Avogadro's law, equal volumes of all the closed containers will have the same number of moles of molecules.

Therefore, the number of moles of hydrogen are equal to the number of moles of Sulphur dioxide.

Under the similar conditions of temperature and volume, according to Ideal gas equation, Pressure is directly proportional to the number of moles of gas, hence both should have to excert equal pressure, but according to Graham's law of diffusion, the rate of diffusion of a gas is inversely proportional to the molecular mass of the gas, hence the molecule with lower molecular mass diffuses faster than the molecule with higher molecular mass.

Lower the molecular mass of a gas, higher will be it's collision frequency, and higher will be pressure excerted by gas molecule.

Sulphur dioxide is easily liquifiable gas than Hydrogen.

By considering all the mentioned parameters, it is concluded that Hydrogen can excert more pressure than sulphur dioxide.

1) Oxygen can not form hydrogen bond hence exist in gaseous state, but methyl alcohol can form intermolecular hydrogen bond, hence exist in liquid state.

CH3-OH - - - OH-CH3