Question

what happened when gypsum is heated at 373 k​

Answer 1

Answer:

When gypsum is heated at 373 k, it losses it's water of crystallisation or all the water molecules and became calcium sulphute hemihydrate. Gypsum is converted to 'Plaster of Paris'. On being further heated beyond 373 k, gypsum gives a product known as Gamma " Anhydrite".

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Answer 2

Explanation:

When gypsum is heated at 373 K, it loses its water of crystallization or all the water molecules and becomes calcium sulphate hemihydrate. Gypsum is converted to “Plaster of Paris”. ... On being further heated beyond 373 K, gypsum gives a product known as Gamma “Anhydrite”.