Chemistry · May / June 2016 · Paper 12 · Question 11

Gases can diffuse through porous pots. The diagram shows a beaker full of nitrogen inverted over a porous pot containing carbon monoxide. The water level does not move. Which statement explains this?

1. ANitrogen is almost inert.
2. BThe two gases have equal molecular masses.
3. CBoth gases have two atoms in a molecule.
4. DNeither gas is soluble in water.

As printed in the paper