Write symbolic representation for the following word equation and balance them:

(i) Calcium + Water $\to$ Calcium hydroxide + Hydrogen

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Solution

Symbolic representation:
$Ca + H_{2} O \to Ca$ $(OH)_{2} + H_{2}$

To equalize H and O, multiply $H_{2} O$ by 2 . $Ca + 2 H_{2} O \to Ca (OH)_{2} + H_{2}$

The equation is balanced.

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