Question

What is the solubility of methane, ethane, and propane in water?

Answer 1

To a first approximation, all gases have some water solubility........

Explanation:

Of course some gases, e.g. the Noble Gases, have minimal water solubility, but others, i.e. `HX`, have quite substantial water solubilities........

See these data......

Answer 2

Ethane, methane and propane are not soluble in water

Explanation:

According to Fire (2009) ethane, methane and propane are nt soluble in water. Their properties are listed in https://books.google.com.tr/books?id=6AGGHbXVpSsC&pg=PA314&lpg=PA314&dq=totally+insoluble+gases+in+water&source=bl&ots=JAJGGZMlLf&sig=uMN3fHHNCO_dcFx6uutSIieAkp4&hl=tr&sa=X&ved=0ahUKEwj2pM2lutHUAhUBWBoKHZCgBKUQ6AEIKjAB#v=onepage&q=totally%20insoluble%20gases%20in%20water&f=false:

Reference

Fire, F. (2009) The Common Sense Approach to Hazardous Materials. Third Edition, PennWell Cooperation. Tulsa, Oklahoma, USA.