In the formula of plaster of Paris only half a water molecule is shown to be attached as water of crystallization. How can we get half a water molecule?I
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Explanation:
It is not possible to have half molecule of water. The formula CaSO₄.1/2 H₂O means that two formula units of CaSO₄ shares one molecule of water , in such a way that the effective water of crystallisation of one particular unit of calcium sulphate comes to 1/2 molecule of water.
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