Why Don't You Need To Dry The Volumetric Flask When Using It?

After all, there is very little water on the scale line of the volumetric flask, which basically does not affect it. And sometimes even adding that little water after shaking, you need to add additional water to continue to set the volume. Anyway, in the end, you need to add deionized water to set the volume. It is not deionized water that is removed by drying.

Supplement: Assuming it is a 100ML volumetric flask, it is all formulated to 0.1mol/L

There are two cases:

1. To the dried volumetric flask, add 0.01MOL of solvent (assuming 10ML) and then add 90ml of water

2. For a volumetric flask that has not been dried, it is exaggerated to assume that there is 10ML of water in it, and then 10ML of solvent is added, and then 80ML of water is added. The final result is both 10ML of solvent and 90ML of water. The same as 1, this is because the volume must always be adjusted to 100ML, the solvent is fixed, but the water is like a problem of adding first and then adding