Determine if the solubility would increase, decrease, or stay the same:
1) A saturated solution of sugar water is cooled from room temp to 0 degrees Celsius.
2) A solution of ocean water with dissolved oxygen is heated from 10 degrees Celsius to 15 degrees Celsius.
3) A saturated solution of hydrochloric acid (liquid) in water is heated from room temperature to 50 degrees Celcius.
what do you think?
To determine if the solubility would increase, decrease, or stay the same for each scenario, we need to consider the general relationship between temperature and solubility.
1) A saturated solution of sugar water is cooled from room temperature to 0 degrees Celsius.
When a saturated solution is cooled, the solubility generally decreases. This happens because as the temperature decreases, the kinetic energy of the water molecules decreases, reducing their ability to overcome the attractive forces between the solute particles (sugar) and the solvent molecules (water). As a result, the solute (sugar) becomes less soluble and may start to crystallize, leading to decreased solubility.
2) A solution of ocean water with dissolved oxygen is heated from 10 degrees Celsius to 15 degrees Celsius.
In this scenario, when the solution is heated, the solubility of dissolved oxygen generally decreases. This is because as the temperature increases, the kinetic energy of the water molecules increases, leading to increased movement and reduced attraction between the water molecules and dissolved oxygen molecules. As a result, the solubility of dissolved oxygen decreases, and it tends to escape from the solution.
3) A saturated solution of hydrochloric acid (liquid) in water is heated from room temperature to 50 degrees Celsius.
For many solid and liquid solutes, the solubility tends to increase with temperature. However, the solubility of hydrochloric acid (HCl) usually decreases as the temperature increases. This means that in this scenario, the solubility of hydrochloric acid would decrease as it is heated from room temperature to 50 degrees Celsius.
It's worth noting that the solubility of substances can vary, and some exceptions may exist. These explanations are based on general trends observed in most cases.