Question

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Write an equation to show the reaction between Plaster of Paris and water.​

Answer 1

Explanation:

The chemical equation for the reaction of Plaster of Paris and water can be represented as

CaSO4.1/2H2O + 3/2H2O → CaSO4.2H2O

As plaster of Paris reacts with water, heat is released through crystallisation. Gypsum is made by heating plaster of Paris to about 150 degrees Celsius. As water is added to dry plaster of Paris powder, it reforms into gypsum. Gypsum transforms to hemihydrate or anhydrous form depending on the temperature.

Answer 2

The chemical equation for the reaction of Plaster of Paris and water can be represented as

CaSO4.1/2H2O + 3/2H2O → CaSO4.2H2O

As plaster of Paris reacts with water, heat is released through crystallisation. Gypsum is made by heating plaster of Paris to about 150 degrees Celsius. As water is added to dry plaster of Paris powder, it reforms into gypsum. Gypsum transforms to hemihydrate or anhydrous form depending on the temperature.