The answer is here near the top. And it follows through from my educated guess on the dipole moment.
http://en.wikipedia.org/wiki/Maleic_acid
Of the two isomers maleic and fumaric acids which one is more soluble in a polar solvent like water? why
2 answers
I found some data.
maleic form is soluble at 78.8 g/100 cc water. Fumaric solubility is 0.7 g/100 cc water. Again, that is consistent with the best guess about dipole moment.
maleic form is soluble at 78.8 g/100 cc water. Fumaric solubility is 0.7 g/100 cc water. Again, that is consistent with the best guess about dipole moment.