Solubility of organic compounds

[DespicableMe]

Homework Statement

Rank the solubilities of these organic compounds from lowest to highest:
Hydrocarbons, aldehydes, alcohols, carboxylic acid.

The Attempt at a Solution

I know that hydrocarbons is the lowest - it cannot form H bonds with itself nor can it form H bonds with water.

For the other 3, though, I'm not sure which one has a stronger solubility over the other two.
They are all soluble because they can form H-bonds with water even though they might not be able to form H bonds with itself (aldehydes).
All their solubilities fall as the length of their hydrocarbon chains increase, so I'm not sure how to rank the last 3.

 

[Borek]

What if something is ionized?

 

[DespicableMe]

What if something is ionized?

I'm not sure, they only asked us to rank those 3.

 

[Borek]

What acid does in water?