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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: jasian on October 18, 2022, 11:09:04 AM

Title: Can I boil away water from a copper (II) sulfate pentahydrate and water solution
Post by: jasian on October 18, 2022, 11:09:04 AM
In our crystal growing lab, our water was not distilled and we need to remove it from our solution. How would I go about removing the water? Would evaporating the water by boiling it work? I don't want to remove the water molecules and make it anhydrous.
Title: Re: Can I boil away water from a copper (II) sulfate pentahydrate and water solution
Post by: Corribus on October 18, 2022, 12:24:23 PM
Are you saying you want to remove water from your grown crystals? I would gently filter it (or decant it) and collect your crystals that way. Copper sulfate pentahydrate loses a lot of its bound water at pretty low temperature.
Title: Re: Can I boil away water from a copper (II) sulfate pentahydrate and water solution
Post by: jasian on October 18, 2022, 12:41:10 PM
Are you saying you want to remove water from your grown crystals? I would gently filter it (or decant it) and collect your crystals that way. Copper sulfate pentahydrate loses a lot of its bound water at pretty low temperature.

I want to recover as much solid as I can, then discard the undistilled water. So far, we are just letting it rest overnight with a paper towel on top so that the water evaporates away at a low temperature.
Title: Re: Can I boil away water from a copper (II) sulfate pentahydrate and water solution
Post by: Borek on October 18, 2022, 06:19:06 PM
Just filter the crystals out.