Question

A white coloured powder is used by doctors for supporting fractured bones. 

(a) Write chemical name and formula of the powder. 

(b) When this white powder is mixed with water a hard-solid mass is obtained. Write balanced chemical equation for the change.

Answer 1

a. The chemical name and formula of the white coloured powder which is used by doctors for supporting fractured bones is: - 

Chemical name – Calcium sulphate hemihydrate 

Formula - CaSO₄ \(\frac12\)H₂O 

b. When this white powder is mixed with water a hard-solid mass is obtained. The balanced chemical equation for the change is: -

CaSO₄.\(\frac12\)H₂O + 1\(\frac12\)H₂O → CaSO₄.2H₂O