2007-09-17 01:12:52 · 0 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
are you sure when it cool it turn to blue again?? not white??
2007-09-17 01:23:34 · update #1
The other answer is correct. IF you cool the dehydrated CuSO4 in an environment without water vapor (like in a dessicator), it will remain white. However, if it is humid, the CuSO4 will absorb water from the atmosphere and will revert to the original and more stable hydrated form of the solid.
Hope this helps.
2007-09-17 01:41:53 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋
colour change cuso45h2o heat cool
2016-01-31 09:41:37 · answer #2 · answered by Natal 4 · 0⤊ 0⤋
When heated, the water of crystalization will evaporate off, forming anhydrous copper (II) sulphate, and causing the compound to turn from a blue to a grey-white color.
If it cools and absorbs water vapour from the atmosphere, then it will return to it's blue color, from it's grey-white color.
2007-09-17 01:19:54 · answer #3 · answered by tinned_tuna 3 · 1⤊ 0⤋