Question

name of chemical prepared by date of preparation​

Answer 1

Answer:

Plaster of Paris:

Preparation: Plaster of Paris is formed by heating gypsum (CaSO

4

.2H

2

O) at 100

o

C.

Gupsum

CaSO

4

.2H

2

O

Δ

→

100

o

C

Plaster of Paris

CaSO

4

.

2

1

H

2

O

+

water

1

2

1

H

2

O

Chemical Name: Calcium sulphate hemihydrate.

Chemical Formula: CaSO

4

2

1

H

2

O.

Answer 2

Answer:

A gypsum plaster with a quick setting time is plaster of paris. It is made of a fine, white powder that hardens, moistens, and then dries.

Explanation:

What is the method of making plaster of paris?

Gypsum, which is found in Paris, is heated in order to make plaster of Paris. It is known as Plaster of Paris for this reason. Calcium sulphate dihydrate makes up the soft sulphate mineral known as gypsum. Its chemical composition is $CaSO4.2H2O.$ Plaster of Paris preparation: Calcium sulphate that has been chemically hydrated. Gypsum may be calcined to create it. Gypsum is a calcium sulphate ore. on heating at Gypsum at 120°$C$ Plaster of Paris is provided. This is the chemical reaction:

$CaSO4.2H2O$ --> $1200CCaSO4.12H2O+32H2O$ hence the chemical formula of Plaster of Paris is $CaSO4.12H2O$.

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