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Question

Why sugar dissolves faster in the water when stirred?


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Solution

Solubility:

  • Solubility is the establishment of a new link between solute molecules and solvent molecules.
  • Solubility is the highest concentration of solute that dissolves in a known concentration of solvent at a particular temperature in terms of quantity.

Sugar dissolves faster in the water when stirred:

  • When sugar dissolves in water, it dissolves faster if the water is agitated.
  • The stirring ensures that new solvent molecules are constantly in touch with the solute.
  • If it is not agitated, the water at the solute's surface becomes saturated with dissolved sugar molecules, making it more difficult to dissolve the new solute.
  • The sugar cube would dissolve eventually because the random motions of the water molecules would bring enough new solvent into touch with the sugar, but it would take much longer.
  • It is critical to understand that stirring or breaking up a solute has no effect on the overall amount of solute that dissolves; these operations simply impact the rate of dissolution.


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