Question

define the plaster of parish

Answer 1

PLASTER OF PARIS IS A SOFT MIXTURE OF SAND AND CEMENT SOMETIMES LIME WITH WATER FOR SPREADING ON WALLS CEILING OR OTHER STRUCTURES TO FORM A SMOOTH AND HARD SURFACE WHEN DRIED.

Answer 2

Heya,
Friend,

●PLASTER OF PARIS..... ( POP)

Plaster of Paris is calcium sulphate hemihydrate and it's formula is CaSO4. 1/2 H2O or 2CaSO4. H2O.

On heating gypsum at 100° In a kiln ,Plaster of Paris is obtained.

If the temperature of the reaction vessel is increased above 100° C ( 373 K) , anhydrous calcium sulphate Will be obtained in place of POP.

●PROPERTIES.....

• It is a white powder.

• It has a remarkable property of setting into a hard mass when mixed with water and form gypsum (rehydration )

●USES......

• It is used for making casts in dentistry.

• It is used for producing Mould's of toys, pottery etc.

Hope this will help you...

For equation see the attached picture!!