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How is plaster of paris prepared?...

How is plaster of paris prepared?

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Plaster of Paris is prepared by heating gypsum to a temperature of `100^@C` . The following reaction takes place
` CaSO_4. 2H_2O overset(100^@C)(to) CaSO_(4) 1/2H_2O + 1(1)/(2) H_2O`
: On mixing with water, it react to a hard mass to form gypsum again i.e, the reverse reaction takes place.
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Plaster of paris is

How is plaster of Paris chemically different from Gypsum ? How can they be inter -converted ? Write two uses of plaster of paris.

Knowledge Check

  • Plaster of Paris is represented as

    A
    `CaSo_4.1/2 h_2O`
    B
    `CaSO_4.H_2O`
    C
    CaSO_4.2H_2O`
    D
    `CaSO_4`

  • Plaster of Paris is represented as

    A
    `CaSO_4. 1/2 H_2O`
    B
    `CaSO_4. H_2O`
    C
    `CaSO_4. 2H_2O`
    D
    `CaSO_4`.

  • Plaster of Paris is represented as

    A
    `CaSO_(4). 2H_(2)O`
    B
    `CaSO_(4). H_(2)O`
    C
    `CaSO_(4). (1)/(2) H_(2)O`
    D
    `CaSO_(4)`

    • Similar Questions

    Explore conceptually related problems

    (i) Write the chemical formula of each of the following: (a) Plaster of paris (b) Gypsum (ii) How can plaster of paris be converted into gypsum. (iii) List any one use of plaster of paris.

    State the chemical name of plaster of paris . Write a chemical equation to show the reaction between plaster of paris and water.

    a) What happens if too much of acid is produced in the stomach? What is the remedy for this situation? b) What is water of crystallization? How is plaster of . The fixed numberparis prepared? Write any two uses of plaster of paris .

    a) What happens if too much of acid is produced in the stomach? What is the remedy for this situation? b) What is water of crystallization? How is plaster of . The fixed numberparis prepared? Write any two uses of plaster of paris .

    Write an eqations to show the reaction b/w plaster of paris and water.

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