Which two processes are at equilibrium in a saturated sugar solution? Select one: a. evaporation and condensation b. dissolving and crystallization c. decomposition and synthesis d. ionization and recombination

B. Dissolution and Crystallization

Explanation:

Saturated Solutions

Saturated solutions occur when the solvent's favorable interactions with the solute become equal to the favorable interactions between solute molecules. This means that solidification and dissolution occur simultaneously, at equal rates, which is the essence of a chemical equilibrium.

The processes that compete in a solution are always recrystallization and dissolution (d). A saturated solution can hold no additional solute concentration, but, in the presence of excess solid, any loss of solute concentration will dissolve more of the solid to reacquire the equilibrium.

Option C.

Dissolving and crystallization

Explanation:

A saturated solution is a solution in which no more solute can be dissolved in the solvent.

In this case, the solute and solvent are in a state of equilibrium. What usually happens here is that as some solutes go into solution, some other solutes are recrystallized out of the solution. The rate at which the  solutes dissolve and crystallize out are often equal.

Hence in a saturated sugar solution, dissolving and crystallization are the two processes that are in equilibrium.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.