Maximum Percent Recovery?

[ChemIsHard]

One gram of salicylic acid dissolves in 460 mL of water at room temperature and 15 mL of boiling water. What is the maximum percent recovery that can be achieved using water as a recrystallization solvent assuming the recrystallization mixture is not cooled below room temp.?

So I assumed we use 15 mL water. So all the solvent dissolves. The solvent is then lowered to room temperature and 15/460=3.26%.

Total Yield=100%-3.26%=96.7% approx.

Does that look right?

 

[Ygggdrasil]

Looks correct to me. Good job.

 

[Blueshift5]

I would like to clarify a few things about this scenario. First, it is important to note that the maximum percent recovery can vary depending on the purity of the initial sample and the efficiency of the recrystallization process. Additionally, the solubility of salicylic acid in water can also be affected by factors such as temperature and the presence of impurities.

In this scenario, assuming that the recrystallization process is carried out properly and the initial sample is pure, the maximum percent recovery would indeed be approximately 96.7%. This is because 15 mL of boiling water can dissolve all of the salicylic acid, but as the solution cools to room temperature, some of the salicylic acid will begin to crystallize out of the solution. This means that not all of the dissolved salicylic acid will be recovered, resulting in a yield of approximately 96.7%.

However, it is worth noting that this is an ideal scenario and in reality, the actual percent recovery may be slightly lower due to factors such as loss during filtration or evaporation. It is also important to consider the solubility of salicylic acid in water at different temperatures, as this can affect the maximum percent recovery that can be achieved. Further experimentation and optimization of the recrystallization process may be necessary to achieve the highest possible percent recovery.