Homework Help: Chemistry

Posted by Anonymous on Wednesday, December 15, 2010 at 9:55pm.

Copper sulfate is a hydrated crystal with the formula CuSO4*5H20 and a deep blue color. when its heated, the crystals crumble and turn white. (a) propose an explanation for this change of color.
(b) what would you do to restore the blue color?

Chemistry - Gabby, Wednesday, December 15, 2010 at 9:56pm
(a) might be the result of a chemical change of properties
and i dont know (b) freeze it?
Chemistry - DrBob222, Wednesday, December 15, 2010 at 10:03pm
When heating a crystal of CuSO4.5H2O, the crystal suffers a loss of H2O and leaves a grey colored powder. What might you do to restore the crystal> Place it in a closed vessel with water (in a separate container) and the dry CuSO4 will absorb the water (from the water vapor) it lost when heated and the blue color will return.

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