Question

the nature of calcium phosphate is present in tooth enamel is
A) basic
B) amphoteric
C) acidic
D) neutal

Answer 1

(a) Calcium phosphate is basic salt, as it is a salt of weak acid (phosphoric acid) and slightly stronger base (calcium hydroxide) (though both are weak). Also when pH of our mouth falls below 5.5 due to eating of sweets etc., i.e., mouth is acidic, the dissolution of enamel (calcium phosphate) starts which shows that calcium phosphate is basic in nature.

Answer 2

Answer:

Option A is the correct answer

Basic

• Since it contains both a modest supply of phosphoric acid and a somewhat more potent base in the form of calcium hydroxide, calcium phosphate is a basic salt.
• Calcium phosphate is a mineral made up of the inorganic phosphate ion and calcium ion (Ca2+). The tooth's crown region and bones both contain it.

Explanation:

With the chemical formula Ca3(PO4)2, calcium phosphate is a calcium salt of phosphoric acid. Tricalcium phosphate or Calcium Tribasic Phosphate are other names for it.

• Calcium phosphate is a white, amorphous, or crystalline powder that has no flavor or odor.
• Diluted nitric acid and hydrochloric acid make them soluble, but ethanol and acetic acid are insoluble in them.
• In water, it hardly slightly dissolves.
• It can be found in ground, milk, teeth, and bones.
• Disorders brought on by low calcium levels, such as bone loss, brittle bones, impaired parathyroid gland function, and various muscle ailments, can be treated with calcium phosphate.

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