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Crystals of a substance changed their colour on heating in a closed vessel but regained after sometime, when they were allowed to cool down.(i) Name one such substance.(ii) Explain the phenomenon involved. |
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Answer» (i) CuSO4.SH2O CuSO4.5H2O Heat →CuSO4+5H2O CuSO4.5H2O-(Blue) CuSO4+5H2O-(White) (ii) Explanation: On heating, crystal loses water of crystallisation and regain it on cooling |
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