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Plaster of Paris (POP) is...

Plaster of Paris (POP) is

A

`CaSO_(4) . 2H_(2)O`

B

`CaSO_(4).H_(2)O`

C

`CaSO_(4).(1)/(2)H_(2)O`

D

`CaSO_(4).(1)/(4)H_(2)O`

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the substance**: Plaster of Paris (POP) is a compound derived from gypsum. 2. **Chemical formula of gypsum**: The chemical formula for gypsum is \( \text{CaSO}_4 \cdot 2\text{H}_2\text{O} \). This indicates that gypsum contains calcium sulfate and two water molecules. 3. **Heating gypsum**: When gypsum is heated to about 373 Kelvin (approximately 100°C), it undergoes a dehydration process. This means that some of the water molecules are removed. 4. **Formation of Plaster of Paris**: Upon heating, gypsum loses one and a half water molecules. The resulting compound, Plaster of Paris, has the chemical formula \( \text{CaSO}_4 \cdot \frac{1}{2}\text{H}_2\text{O} \). 5. **Final chemical formula**: Therefore, the chemical formula for Plaster of Paris is \( \text{CaSO}_4 \cdot \frac{1}{2}\text{H}_2\text{O} \). 6. **Conclusion**: The correct answer from the options provided is \( \text{CaSO}_4 \cdot \frac{1}{2}\text{H}_2\text{O} \).
**Step-by-Step Solution:** 1. **Identify the substance**: Plaster of Paris (POP) is a compound derived from gypsum. 2. **Chemical formula of gypsum**: The chemical formula for gypsum is \( \text{CaSO}_4 \cdot 2\text{H}_2\text{O} \). This indicates that gypsum contains calcium sulfate and two water molecules. 3. **Heating gypsum**: When gypsum is heated to about 373 Kelvin (approximately 100°C), it undergoes a dehydration process. This means that some of the water molecules are removed. ...
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Similar Questions

Explore conceptually related problems

Boojho’s sister broke a white dove, a symbol of peace, made of Plaster of Paris (POP). Boojho tried to reconstruct the toy by making a powder of the broken pieces and then making a paste by mixing water. Will he be successful in his effort? Justify your answer.

Identify the correct statement - (A) Gypsum contains a lower percentage of calcium than Plaster of Paris (B) Gypsum is obtained by heating Plaster of Paris (C) Plaster of Paris is obtained by hydration of gypsum (D) Plaster of Paris is obtained by partial oxidation of gypsum

Knowledge Check

  • Plaster of Paris is

    A
    `Ca SO _(4) . 2 H _(2) O`
    B
    `Ca SO _(4) . (1)/(2) H _(2)O`
    C
    `CaSO _(4) . 5 H _(2) O`
    D
    `CaSO _(4) . H _(2) O`

  • Plaster of Paris is

    A
    calcium sulphate `(CaSO_(4))`
    B
    calcium sulphate hemihydrate`(CaSO_(4).1//2H_(2)O)`
    C
    barium sulphate `(BaSO_(4))`
    D
    none of these .

  • Plaster of paris is

    A
    `CaSO_(4).(1)/(2)H_(2)O`
    B
    `CaSO_(4).2H_(2)O`
    C
    `CaSO_(4).CaCO_(3)`
    D
    `CaSO_(4).5H_(2)O`

    • Similar Questions

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    What is the formulae of (i) Plaster of Paris (ii) Gypsum ?

    What is the chemical formula for Plaster of Paris ? How is it prepared ? State the common and the chemical names of the compound formed when Plaster of Paris is mixed with water.

    What is the chemical formula for Plaster of Paris ? How is it prepared ? State the common and chemical names of the compound formed when Plaster of Paris is mixed with water.

    Plaster of paris of

    The chemical formula for plaster of Paris is :

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