1.

A few crystals of copper sulphate are heated in B/F dry boiling tube :(i) What is the colour before and after heating ?(ii) What is the reason for the colour change ?(iii) Can its original colour be restored ? How ?

Answer»

(i) Blue and white respectively. 

(ii) Water of crystallization is lost on heating.

(iii) Yes' by adding water.



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