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International Standards forDrinking Water (Environmental Chemistry) (Chemistry) (Class 11)

The recommended concentration of fluoride ion in drinking wate

Question

Medium

Solving time: 3 mins

The recommended concentration of fluoride ion in drinking water is up to $1 ppm$ as fluoride ion is required to make teeth enamel harder by converting $[3 Ca_{3} (PO_{4})_{2} \cdot Ca (OH)_{2}]$ to :

Name: Video solution 1: The recommended concentration of fluoride ion in drinking water is up to 1ppm as fluoride ion is required to make teeth enamel harder by converting [3Ca3(PO4)2⋅Ca(OH)2] to :
Uploaded: 2022-09-13T01:44:39.000Z
Duration: 2 min
Description: Video solution 1: The recommended concentration of fluoride ion in drinking water is up to 1ppm as fluoride ion is required to make teeth enamel harder by converting [3Ca3(PO4)2⋅Ca(OH)2] to :

[CaF_{2}]

[3 (CaF_{2}) \cdot Ca (OH)_{2}]

[3 Ca_{3} (PO_{4})_{2} \cdot CaF_{2}]

[3 {Ca_{3} (PO_{4})_{2}} \cdot CaF_{2}]

Views: 5,812 students

Updated on: Sep 13, 2022

Book:

Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

Exam:

JEE Mains 2018

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The recommended concentration of fluoride ion in drinking water is up to

1 ppm

as fluoride ion is required to make teeth enamel harder by converting

[3 Ca_{3} (PO_{4})_{2} \cdot Ca (OH)_{2}]

to :

12 mins ago

Discuss this question LIVE

12 mins ago

Text solutionVerified

Fluoride ions help in making teeth enamel harder by converting

[3 Ca_{3} (PO_{4})_{2} \cdot Ca (OH)_{2}]

i.e. Hydroxy apatite to

[3 Ca_{3} (PO_{4})_{2} \cdot CaF_{2}]

i.e., Fluorapatite (Harder teeth enamel) via following reaction:

[3 Ca_{3} (PO_{4})_{2} \cdot Ca (OH)_{2}] + From drinking water ⟶ [3 Ca_{3} (PO_{4})_{2} \cdot CaF_{2}] + 2 OH^{-}

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Question Text	The recommended concentration of fluoride ion in drinking water is up to $1 ppm$ as fluoride ion is required to make teeth enamel harder by converting $[3 Ca_{3} (PO_{4})_{2} \cdot Ca (OH)_{2}]$ to :
Updated On	Sep 13, 2022
Topic	Environmental Chemistry
Subject	Chemistry
Class	Class 11
Answer Type	Text solution:1 Video solution: 1
Upvotes	204
Avg. Video Duration	2 min

The recommended concentration of fluoride ion in drinking water is up to $1 ppm$ as fluoride ion is required to make teeth enamel harder by converting $[3 Ca_{3} (PO_{4})_{2} \cdot Ca (OH)_{2}]$ to :

Text solutionVerified

Filo tutor solutions (1)

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The recommended concentration of fluoride ion in drinking water is up to 1ppm as fluoride ion is required to make teeth enamel harder by converting [3Ca3​(PO4​)2​⋅Ca(OH)2​] to :

Text solutionVerified

Filo tutor solutions (1)

Questions from JEE Mains 2018 - PYQs

Practice questions from Arihant Chemistry JEE Main Chapterwise Solutions (2019-2002) (Arihant)

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The recommended concentration of fluoride ion in drinking water is up to $1 ppm$ as fluoride ion is required to make teeth enamel harder by converting $[3 Ca_{3} (PO_{4})_{2} \cdot Ca (OH)_{2}]$ to :