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  • A white powder is used by doctors to support fractured bones. (a) Write the name and chemical formula of the powder. (b) How is this powder prepared ? (c) When this white powder is mixed with water, a hard solid mass is obtained. W

A white powder is used by doctors to support fractured bones.
(a) Write the name and chemical formula of the powder.
(b) How is this powder prepared ?
(c) When this white powder is mixed with water, a hard solid mass is obtained. Write a balanced chemical equation for the change.
(d) Give one more use of this white powder.

 

 

 

 
 
 
 
 

Answers (1)

A white powder is used by doctors to support fractured bones.
(a) Name of white powder - Plaster of paris

      Chemical formula :- CaSO_{4}.2H_{2}O
(b) Plaster of paris is made by the heating process of gypsum or the olihydrated calcium sulphate.
(c) The chemical reaction between plaster of paris and water CaSO_{4}.1/2H_{2}O+1^{1/2}H_{2}O\rightarrow CaSO_{4}.2H_{2}O
(d) This powder is used for construction word and making pottery items.

Posted by

Sumit Saini

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