The conversation between human and AI assistant.
Why is CaSO4 (calcium sulphate) not soluble in hot water but soluble in cold water?
But why does this happen?
This happens because the energy provided by the higher temperature causes the water molecules to move around more quickly, making it more difficult for them to surround and dissolve the CaSO4 molecules. As a result, the amount of CaSO4 that can dissolve in the water at higher temperatures becomes more limited.