What gases are not able to be collected over water due to their solubility?

[TT0]

Homework Statement

In a proper laboratory setup for collecting a gas by water displacement, which of these gases could NOT be collected over H₂O because of its solubility?

A. CO₂
B. NO
C. O₂
D. NH₃
E. CH₄

Homework Equations

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The Attempt at a Solution

I know E is definitely wrong because its organic so its insoluble in water. Water is polar so polar gases should be soluble in it, B and D are polar. Also carbon dioxide should be soluble in water because CO₂ + H₂O -> H₂CO₃. This gives me 3 gases that will be be able to be collected over water but there should only be one.

Thanks!

 

[Ygggdrasil]

All gasses are soluble to some extent in liquid water, but one of these molecules in particular will have very strong interactions with water molecules. Think of the potential intermolecular interactions each of these molecules would form with water.

 

[TT0]

Both B and D are polar but B has less difference in electronegativity so D would be the most polar so most soluble, right?

 

[Borek]

Again: think of intermolecular interactions. Just being polar is not everything.

 

[TT0]

Hydrogen bonding!