Plaster of Paris on making paste with little water sets to hard mass due to formation of

Question

Plaster of Paris on making paste with little water sets to hard mass due to formation of (A)  CaSO4  (B)  CaSO4 ⋅ 1/2 H2O  (C)  CaSO4 ⋅ H2O  (D)  CaSO4 ⋅ 2H2O

Tardigrade Admin · Accepted Answer

Plaster of Paris becomes very hard by the process of hydration
Plaster of paris is a white powder. It changes into a hard mass called gypsum on mixing with water. There is a slight increase in volume during this process

Plaster of Paris C a S O_{4} \cdot \frac{1}{2} H_{2} O + 1 \frac{1}{2} H_{2} O \to Gypsum C a S O_{4} \cdot 2 H_{2} O + He a t

Q. Plaster of Paris on making paste with little water sets to hard mass due to formation of

$C a S O_{4}$

$C a S O_{4} \cdot 1/2 H_{2} O$

$C a S O_{4} \cdot H_{2} O$

$C a S O_{4} \cdot 2 H_{2} O$

Q. Plaster of Paris on making paste with little water sets to hard mass due to formation of

CaSO4​

CaSO4​⋅1/2H2​O

CaSO4​⋅H2​O

CaSO4​⋅2H2​O

$C a S O_{4}$

$C a S O_{4} \cdot 1/2 H_{2} O$

$C a S O_{4} \cdot H_{2} O$

$C a S O_{4} \cdot 2 H_{2} O$