Sugar dissolves in water so we can say that it is
in water
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no
it will be sweet water
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What is the reason why sugar dissolves in water?
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Robert Mauban, Likes science and, well, everything!
Answered February 7, 2017
Sugar is soluble in water due to the hydroxl, or alcohol, groups.
Solubility is heavily intertwined with polarity and dipole moments. Essentially, if the dipole moments of the solute and solvent are similar, the solute dissolve.
Water is very polar. There is said to be a partial negative charge at the oxygen end and a partial positive charge at the hydrogen. This is due to oxygen’s electronegativity being higher than hydrogens. Thus, we would expect polar solutes to dissolve in water.
Let us look at a simple cycloalkane before we look at sugar, say cyclohexane:

The difference of electronegativity between hydrogen and carbon isn’t very high thus no significant partial charges are formed. As a result, cyclohexane is non-polar and doesn’t mix well with water.
Now lets look at a sugar, say glucose:

You can see it looks very similar. However, those alcohol groups (-OH) provide the necessary polarity for sugar to dissolve in water. Strip away all the alcohol groups and the solubility in water would dramatically reduce.
As an extra note:
The addition of polar groups to non-polar molecules is very crucial for modern medicine. For an example, take an antihistamine called fexofenadine:

Notice how it has two alcohol groups and a carboxyl group. These polar groups prevent the molecule from crossing the blood-brain barrier. If these molecules were able to cross the blood-brain barrier, they would have a sedative side-effect.