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.
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Answer:
That is plaster of Paris (pop)
a) CaSO4. 2H2O
b)
It is prepared from gypsum. Plaster of Paris is prepared by heating gypsum to a temperature of 373K. When gypsum is heated to a temperature of 373k ,It loses three-Fourths of its water of crystallisation and forms Plaster of Paris.
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