Cyclopropane is a non-polar hydrocarbon. Why is it soluble in polar solvents like alcohols and ethers? Is it also soluble in water? Is it more soluble in water as compared to hydrogen sulfide?
Cyclopropane is a gaseous non-polar substance which is not expected to dissolve in the highly polar liquid water. However, the rule of "Like Dissolves Like" is dropped out if water becomes in the vapor state & a new rule is set "All Gases Dissolve in All Gases in All Proportions" so cyclopropane & gaseous water will dissolve each other.
Solubility of cyclopropane in liquid organic solvents "stated in your question" is attributed to the fact that these solvents have non-polar parts in them "i.e. there is a common factor".
Solubility of hydrogen sulfide gas in liquid water is well known but it is not a large one even though both of them are polar. A gas which dissolves in a liquid phase will always have the tendency to escape "in agreement with an increase of entropy".
Worth to be noticed is that there is a known cyclopropane―water complex (hydrate) (*) and a cyclopropane cation―water (cationic) complex (**). A few references follow:
(*) S. Suzuki, P.G. Green, R.E. Bumgamer, S. Dasgupta, W.A. Goddard III, G.A. Blake, Science, 257 (1993), 942; A.J. Gotch, T. S. Zwier, J. Chem. Phys., 96 (1992), 3388; A.M. Andrews, K.W. Hillig II, R.L. Kuczkowski, J. Am. Chem. Soc., 114 (1992), 6765; B.J. Anderson, M.Z. Bazant, J.W. Tester, B.L. Trout, J. Phys. Chem. B, 109 (2005), 8153.
(**) J.‐D. Shao, T. Baer, J.C. Morrow, M.L. Fraser‐Monteiro, J. Chem. Phys., 87 (1987), 5242.
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