How will stirring and raising the temperature affect the rate of sugar dissolution in water? Will...

How will stirring and raising the temperature affect the rate of sugar dissolution in water? Will either approach increase the total amount of sugar that can dissolve in a given amount of water? Explain other factors that could influence the rate of dissolution of sugar in water. Describe your answers in terms of mass transfer concepts.

Expert Solution

This is a case typically comes under solubility of sugar (solute) in given water (solvent). Solubilityis the quantity of solute that dissolves in a given amount of solvent. The solubility of a solute depends on the nature of the solute and solvent, The amount of solute, the temperature and pressure (for a gas) of the solvent.

The amount of dissolved in liquid water, the solubility increases with temperature.
The increase in temperature results in raise in the kinetic energy of water. T increase in kinetic energy that comes with higher temperatures allows the water water molecules to more effectively break apart the sugar molecules that are held together by intermolecular attractions.
The stirring action improves the kinetic energy again. The increased vibration (kinetic energy) of the sugar molecules causes them to dissolve more readily because they are less able to hold together.

Pressure is not going to influence the solubility of solids in liquid. Hence both raising temperature and stirring action can increase the dissolution of sugar in water.

Amanda K answered 2 years ago

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