For the two compounds below, use chemical structure and
intermolecular forces to predict which compound would exhibit
greater solubility in water. Use thermodynamics of dissolution in
water to frame your answer.
Homework Answers
A molecule can be soluble in water for mainly two reason 1st is if the molecule get stabilised by larger no of hydrogen bonding i.e. intermolecular hydrogen bonding & 2nd is due to polarity in the molecule which gets stability by polar molecule H2O via solvation. Here 1st molecule i.e. Ctechol will exhibit greater solubility in H2O reasons are following-
now from intermolecular forces point of view-
Now
from chemical structure Catechol is more polar than O-cresol so
Catechol will be more soluble in polar solvent H2O than O-cresol
.
And also we can see in O-cresol it contains one hydrophobic methyl group which is not soluble in water but in Catechol instead of that methyl group there present hydrophilic OH group that is why also Cresol is more soluble.
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