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Anhydrous copper sulphate in a test tube
Description:
Anhydrous copper sulphate. Image 1 of 3. This copper salt (CuSO4) usually has a blue color, but this is due to the presence of water of crystallization within the molecular structure of the crystals. Hydrated copper sulphate has the formula CuSO4.5H2O. Heating removes the five water molecules (H2O), leading to the color being lost. The process is reversible, and adding water to the anhydrous crystals restores their blue color. For a sequence showing the addition of water to these crystals, see images A500/380-382.
Credit:
Andrew Lambert Photography/Science Source
Unique identifier:
SS293199
Legacy Identifier:
SB5012
Type:
Image
Size:
4874px × 3588px (~50 MB)
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Tags
A500/0380
A500/380
A5000380
anhydrous
chemistry
compound
copper sulphate
crystal
crystals
dehydrated
density experiment
dry
equipment
glassware
horizontal
lab
metal
salt
solid
substance
test tube
water of crystallization
white
