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

Answer:

Plaster of Paris the substance used to treat the fractured bones. The chemical name of the powder is known as calcium Sulphate Hemihydrates. Water of crystallization is the added to the plaster of Paris to make it more durable. It goes a long way in delivering sterling results to the users.

Answer 2

Answer:

(a) The salt is Plaster of Paris.

Chemical Formula: CaSO$\\_{4\\}$ . $\frac{1\\}{2}$H$_{2}$O

Chemical name: Calcium Sulphate Hemihydrate

(b) CaSO$\\_{4\\}$ . $\frac{1\\}{2}$H$_{2}$O(s) + 1$\frac{1\\}{2}$H$_{2}$O(l) →  CaSO$\\_{4\\}$ . 2H$_{2}$O(s)

Explanation:

When POP reacts with water it turns into a solid mass called gypsum(CaSO$\\_{4\\}$ . 2H$_{2}$O).

thanks hope this helps you.