Which of the following is the correct formula of calcium bicarbonate?

$C a (H C O_{3})_{2}$

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$C a H C O_{3}$

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$C a C O_{3}$

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$C a_{2} C O_{3}$

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Solution

The correct option is A
$C a (H C O_{3})_{2}$

Calcium bicarbonate consist of calcium ion and bicarbonate ion, i.e., $C a^{2 +}$ and $H C O_{3}^{-}$ .

Symbol Ca $H C O_{3}$

Charge +2 -1

On cross-multiplication and balancing the charge, we get the formula as $C a {H C O}_{3}$ .

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Which of the following compound is formed during the removal of temporary hardness of water containing calcium bicarbonate through boiling?

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