Hardness of water is due to presence of salts of: | Chemistry | SolveeIt

Hardness of water is due to presence of salts of:

$Na^{+}$ and $K^{+}$

$Ca^{2+}$ and $Mg^{2+}$

$Ca^{2+}$ and $K^{+}$

$Ca^{2+}$ and $Na^{+}$

Answer

$Ca^{2+}$ and $Mg^{2+}$

Explanation

Hardness of $H _{2} O$ is due to the presence of bicarbonates, chlorides, and sulphates of Ca and Mg ions.

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