Question

Write an equation to show the reaction between Plaster Of Paris and water

Answer 1

Plaster Of Paris:

• Plaster of Paris is a widely used material in sculpting materials.
• $\left({\mathrm{CaSO}}_4\right).\frac{1}{2}{\mathrm{H}}_2\mathrm{O}$ is the chemical formula for plaster of Paris.

Reaction of Plaster of Paris and water:

• When plaster of Paris absorbs water, it transforms into gypsum and so hardens, which accounts for the setting feature of plaster of Paris.
• The reaction of plaster of couples with water is depicted as follows:
• $$\begin{gathered} \left({\mathrm{CaSO}}_4\right).\frac{1}{2}{\mathrm{H}}_2\mathrm{O}+1.\frac{1}{2}{\mathrm{H}}_2\mathrm{O}\to \left({\mathrm{CaSO}}_4\right).2{\mathrm{H}}_2\mathrm{O} \\ \mathrm{Plaster}\mathrm{of}\mathrm{paris}\mathrm{Gypsum} \end{gathered}$$