Question

Write the chemical formula of plaster of Paris.How is it prepared? Write equation for the reaction involved. What
happens when water is added to POP ?Write the reaction between POP and water. Class 10​

Answer 1

plaster of Paris formula••CaSO4.1/2H2O

it is prepared by heating gypsum at 373K

caso4.2H2O---->Caso4.1/2H2O

when water is added to pop it returns gypsum

caso4.1/2+1 1/2----->caso4.2h2O

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it is one and half

Answer 2

Answer:

The chemical formula of POP is Caso4. ... Calcium sulphate hemi hydrate.

Plaster of paris is prepared by heating calcium sulfate dihydrate, or gypsum, to 120–180 °C (248–356 °F).

2(CaSO4.2H2O)-------->2(CaSO4).H2O + 2H2O is the chemical equation.

Heat involved is 120 degree celsius.

Plaster of Paris when reacts with water liberating heat through crystallization. ... When the dry plaster of paris powder is mixed with water it reforms into gypsum. Depending upon the temperature gypsum converts to hemihydrate or anhydrous form.

caso4. 1/2h20(pop) + 1×1/2h2o gives caso4.

I hope it helps u...