Question

When sweetening her iced tea, Emma stirs sugar into the glass. She tastes it and decides she

Answer 1

Generally, the quantity of a solute that can be dissolved in a solvent increases with temperature

The reason why Emma cannot get all the sugar to dissolve in the ice tea is as follows;

The liquid in the iced tea, which is the solvent has reached its solubility limit, it is saturated and therefore can not dissolve any more sugar at the given temperature

Solubility limit and saturation point clarification:

The saturation point or solubility limit is the point at which the sugar in the

solution has the same chemical potential as is present in pure sugar

In order to dissolve more sugar, the temperature of the solution needs to

be raised to increase the kinetic energy of the solvent and sugar molecules

such that the bonds holding the sugar molecules can disintegrate and

more sugar is then dissolved making the iced tea sweeter

Learn more about solid solubility here;

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