HydratesThermal decomposition of salts

Reaction: Heating Gypsum ( CaSO42H2OCaSO_4 \cdot 2H_2O ) at 393K

Expert Answer

2(CaSO42H2O)2CaSO412H2O+3H2O2(CaSO_4 \cdot 2H_2O) \rightarrow 2CaSO_4 \cdot \frac{1}{2}H_2O + 3H_2O (Plaster of Paris)

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