Test for water with anhydrous CuSO4, preparing anhydrous copper (II) sulfate from hydrated crystals

[@iaminyou]

This is so so amazing. Watching them practically gives life to your theory.

[@fredericomba]

Thanks for the demonstration.

[@narlin3841]

Do you use this as a test for water contamination of hygroscopic reagents?

[@sergei-chemistry]

Yes, we can.
Drying them up at the same time.