Question

A compound which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. Identify the compound. Write the chemical equation for its preparation. For what purpose is it used in hospitals?

September 27, 2024

Answer

The compound prepared from gypsum on heating it at 100°C, is known as Plaster of Paris. Its chemical formula is

CaSO₄. ${1\over2}$ H₂O.

Hence, its chemical name is calcium sulphate hemihydrate. The chemical equation for its preparation is as follows:

𝐶𝑎𝑆𝑂₄. 2𝐻₂𝑂 ${\overset{100 ^\circ C}{\longrightarrow}}$ 𝐶𝑎𝑆𝑂₄. ${1\over2}$ 𝐻₂𝑂 + 1 ${1\over2}$ 𝐻₂𝑂

𝐺𝑦𝑝𝑠𝑢𝑚 𝑃𝑙𝑎𝑠𝑡𝑒𝑟 𝑜𝑓 𝑝𝑎𝑟𝑖𝑠 𝑊𝑎𝑡𝑒𝑟

Plaster of Paris is used in hospitals mainly as plaster for supporting fractured bones in the right position. In dentistry, it is used for making casts.

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A compound which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. Identify the compound. Write the chemical equation for its preparation. For what purpose is it used in hospitals?

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