Question

Plaster of paris should be stored in moisture proof container give equation

Answer 1

Explanation:

• CaSo4 ( 1/2) H2O is the formula for plaster of Paris.
• It should be preserve in moisture proof container...
• If we preserve general container it easily absorb 1 1/2 H2O AND FORM ZIPSUM...

• THE EQUATION:
• CaSo4 1/2H2O + 1 1/2 H2O..........>CaSo4 2H2O (ZIPSUM)

Answer 2

$\Large{\underline{\underline{\bf{Solution :}}}}$

Plaster of paris, is is a white powder and on mixing with water, it changes to gypsum giving a hard solid mass.

${\sf{CaSO_4 \: . \: \frac{1}{2}H_2O \: + \: 1\frac{1}{2} \longrightarrow CaSo_4 \: . \: 2 H_2O}}$

So, we should store Plaster of paris in moist air.

$\rule{200}{2}$

• Formula of plaster of paris is $\sf{CaSO_4 .\frac{1}{2} H_2O}$

• It is used for white washing.

• It is also used to join cracked bone.

• It became very hard when mixed with water.