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4 April, 03:16

What is the correct formula for calcium sulfate dihydrate?

-Ca (SO4) 2*2H20

-CaSO4 + 2H20

-Ca2SO4.2H20

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Answers (1)
  1. 4 April, 03:44
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    It is CaSO4.2H2O

    Explanation:

    Calcium has a valence of 2 because it has only two valency electrons.

    Sulphate (SO4) ^2 - is a radical with a valence value of 2.

    When Calcium combines with sulphate in bonding,

    Formular = => Ca2 (SO4) 2

    But the 2 cancel out.

    Overall formular==> CaSO4

    For hydrated, = => CaSO4. H2O
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