Action of heat on blue vitriol is a physical as well as chemical change. Justify.
Answers
Explanation:
Physical change - blue colour which gets escaped during heating can be reobtained by adding a few drops of water . chemical change - when we heat it continuously for a long time then CuSO4 gets decopmosed. Justification: Blue Vitriol is hydrated Copper Sulphate.
Answer and Explanation:
When blue vitriol is a gradually heated to about 800 o C, it undergoes a physical change to form a white powder. On adding a drop of water to the white powder, it changes back to blue. Thus the change is a physical change.
On strongly heating, copper sulphate (blue vitriol) decomposes to give new substances like copper oxide and sulphur dioxide. On cooling these, copper sulphate cannot be re-obtained. Thus it is a chemical change.
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