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Question

If the copper sulfate crystal is made up of copper sulfate sol. So will the crystalline ever melt?


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Solution

Copper sulfate crystal:

  • Evaporation is the process used to separate the soluble solid from its liquid solution.
  • When the copper sulfate crystal undergoes evaporation, the water evaporates away leaving solid copper sulfate crystals behind.
  • Therefore, when copper sulfate is heated for a time, the blue color disappears and becomes whitish-grey.
  • This happens because the water molecules are lost on heating and Copper sulfate pentahydrate is converted to anhydrous Copper sulfate.

Hence, the copper sulfate crystal never melts but we can evaporate it to get anhydrous copper sulfate.


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