A hot saturated solution of copper sulphate forms crystals as it cools. Why???
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chupe marne a lan de te fudhi we deni pahu ge
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*it is due to water of crystallization.
*copper sulphate pentahydrate crystals when heated losses its 5 water molecules and become clourless anyhdrous copper sulphate.
*on cooling,the colourless anyhdrous salt turns back into blue coloured hydrated salt crystals.
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