This is a sonata with a Presto final movement and an Allegro first movement. How fast is Allegro? It seems that the 2/4 time signature was played at a considerably fast tempo during this period. In fact, the mood of this first movement changes dramatically depending on the tempo.

If the tempo is fast, the first movement becomes lively and very energetic. For example, perhaps around quarter note = 100. Trills become virtuosic, triplets become quite fast, and it becomes very dramatic. It evokes a scene like an opera where performers are busily acting on stage.

However, what happens if the tempo is played at around quarter note = 87? It becomes a very calm first movement, evoking even pastoral scenery, a truly tranquil and peaceful movement. By slowing down the tempo, trills and turns become even more effective.

Performers should try many tempos and choose the one that best suits the music they envision.