Edexcel IGCSE Chemistry 2.40C Preparing a Pure, Dry Soluble Salt

A student does a titration to find the concentration of a solution of sulfuric acid. This is the student's method.
- fill a burette with sulfuric acid and record the reading
- transfer $25.0 \mathrm{~cm}^{3}$ of potassium hydroxide solution to a conical flask
- add a few drops of methyl orange to the conical flask
- place the conical flask on a white tile
- swirl the flask continuously while adding sulfuric acid from the burette
- keep adding sulfuric acid until the end-point has been reached
- record the rough reading at the end-point

Another student also does the titration.

The student repeats the titration without the methyl orange indicator.

They add exactly $26.50 \mathrm{~cm}^{3}$ of sulfuric acid to the potassium hydroxide solution.
Describe how the student could obtain pure, dry potassium sulfate crystals from the reaction mixture.