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What is retrograde solubility ?...

What is retrograde solubility ?

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(i) Unlike other salts, gypsum becomes less soluble in water as the temperature increases.
(ii) This is known as retrograde solubility which is a distinguishing characteristic of gypsum.
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Knowledge Check

  • Consider the following statements 1. Gypsum is calcium sulphate hemihydrate 2. Retrograde solubility is striking feature of gypsum 3. Alabaster is a variety of gypsum Which of the following statement(s) given above is/ are incorrect?

    A
    1 & 3
    B
    only 1
    C
    2 & 3
    D
    1, 2 & 3

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