A supersaturated solution of sucrose (C12H22O11) is made by dissolving sucrose i

Question

A supersaturated solution of sucrose (C12H22O11) is made by dissolving sucrose in hot water and slowly letting the solution cool to room temperature. After a long time, the excess sucrose crystallizes out of the solution. Indicate whether each of the following statements is true or false:
PART A
After the excess sucrose has crystallized out, the remaining solution is not saturated.
PART B
After the excess sucrose has crystallized out, the system is now stable and is in equilibrium.
PART C
After the excess sucrose has crystallized out, the rate of sucrose molecules leaving the surface of the crystals to be hydrated by water is greater than the rate of sucrose molecules in water attaching to the surface of the crystals.

Explanation / Answer

A)

false

the solution will be in equilbirium, therefore, there is SATURATION of sucrose in the solutoin

b)

This is true, it is now in equilbirium the solid and aqueous phase of sucrose are in equilibrium

C

FALSE, this is in equilbirium

dynamic euqilbirium implies

rate of crystallization = rate of hydration

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