I am planning an experiment for a school project. I have roughly 50 minutes (not including equipment preparations) to perform my experiment, which aims to experimentally verify how Ksp changes with temperature. Traditional methods such as oven drying would not work because it would take way too long for the sample to be dried. I don't have a specific compound in mind that I want use, but my thought process is as follows:
- Add a "poorly" soluble (Ksp on the order of 10^-2) compound to distilled water
- Stir either with flask or magnetic stir bar
- Vacuum filter the remaining solid
- Dry the sample within roughly half an hour, if possible
- Record the mass that was not dissolved, to get the mass that was dissolved and calculate Ksp from there
I don't have much experience in the lab, so I am looking suggestions of methods for quickly drying a sample. Would it be more effective to get the Ksp using another method, such as measuring the electrical conductivity of the solution, instead of getting the mass?