Which is most soluble in hexane (c6h14), benzene (c6h6) or ethanol (c2h5oh)?

 Polar solvents, like water, will dissolve things that are also polar in nature.( this is what is meant by the chemistry phrase "Like dissolves like") This expression means polar solvents will dissolve polar solutes. While Non-polar solvents will dissolve non-polar solutes. This is why (NaCl) table salt will dissolve in water, because the ionic bond has an electronegativity difference that makes ionic bonds much more polar than any other type of bond. For this reason, Salt has great solubitiy in water.

ANSWER: Therefore, out of those 3 options the most soluble molecule in water will be Ethanol (C2H5OH) because of the Oxygen present in the molecule makes it polar. The oxygen is more electronegative than the other atomsThe most soluble molecule in water will be Ethanol because of the Oxygen present in the molecule. The oxygen is more electronegative and will increase the molecule's polarity.