Question

Which contributes to the dissolution of sugar in water?

a. the dissociation of an ionic compound in water
b. a strong pull of water molecules on an ionic compound
c. the dissociation of a polar covalent compound in water
d. a strong pull of water molecules on a polar covalent compound

Answer 1

Table sugar dissolves in water because when a sucrose molecule breaks from the sugar crystal, it is immediately surrounded by water molecules. The sucrose has hydroxyl groups that have a slight negative charge. The positive charge of the oxygen found in the water molecule binds with the sugar. As the hydration shell forms around the sucrose molecule, the molecule is shielded from other sugar molecules so the sugar crystal does not reform.

Answer 2

@warpedkitten

Answer 3

I'm not very good with chemistry, so I may still be wrong, but does that mean it would be D, @barreraA ? Or B?

Answer 4

I would go with B @warpedkitten

Answer 5

Thank you @barreraA

Answer 6

anytime :) :)

Answer 7

Sugar is not an ionic compound. So, B is incorrect.

Answer 8

Hydroxyls have both partial (denoted by \(\delta \)) positive (\(\delta^+ \)) and negative (\(\delta^- \)) ends because it's a dipole moment, and so are water molecules.

Partial positive ends associate with partial negative ends favourably.