Question

A sugar cube was placed into a beaker containing 100 mL of water at room temperature and completely dissolved into the water. This process is represented by the series of diagrams labeled A, B, and C below. Describe one way that the dissolved sugar at C could be separated from the water.

Answer 1

To separate dissolved sugar from the water, evaporation can be used, where heating the solution causes water to vaporize, leaving behind sugar crystals.

Step-by-step explanation:

To separate dissolved sugar from the water in the described scenario, one could use a process called evaporation. This process involves heating the sugary water solution until the water turns into vapor and leaves behind the sugar crystals. This happens because the sugar and water mixture is a stable true solution where sugar is the solute fully dissolved in water, the solvent. The sugar, comprised of sucrose (C12H22O11), is a molecular compound whose individual sugar molecules are separated in water without breaking the covalent bonds. During evaporation, as the water evaporates due to the heat, the intermolecular attractive forces between sugar molecules will cause them to crystallize out of the solution as the amount of water decreases. Eventually, once all the water has evaporated, the remaining solid sugar can be collected.

Answer 2

Boil the water until it evaporates

Step-by-step explanation:

If the water evaporates the sugar will no longer bond to it and then percipitate at the bottom of the beaker.