How is the rate of spreading of a solid in a liquid affected by the change in temperature?

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Solution

For many solids dissolved in liquid water, the spreading increases with temperature. The increase in kinetic energy that comes with higher temperature allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
The average kinetic energy of the solute molecules also increases with temperature, and it destabilizes the solid state. The increased vibration (kinetic energy) of the solute molecules causes them to be less stable to hold together, and thus they spread more readily.

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