Calcium phosphate is present in tooth enamel. Its nature is: - Vidyadip

MCQ

Calcium phosphate is present in tooth enamel. Its nature is:

✓
Basic.
B
Acidic.
C
Neutral.
D
Amphoteric.

✓

Answer

Correct option: A.

Basic.

Calcium phosphate $Ca _3\left( PO _4\right)_2$ is salt of weak acid and strong base so it is a basic salt.
$3\text{Ca(OH)}_2\ \ +\ \ 2\text{H}_3\text{PO}_4\ \ \ \rightarrow\ \ \ \text{Ca}_3\text{(PO}_4)_2\ \ +\ \ 6\text{H}_2\text{O}\\\text{Calcium}\ \ \ \ \ \ \ \ \ \ \text{Phosphoric}\ \ \ \ \ \ \ \ \ \ \text{Calcium}\\\text{Hydroxide}\ \ \ \ \ \ \ \ \text{acid}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Phosphate}$

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