Classify the following salts as acid salt or normal salt:

$N a H_{2} P O_{4}$ .

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Solution

NaH₂PO₄, sodium dihydrogen phosphate, is an acid salt of phosphoric acid.
An acid salt is formed by partial or incomplete neutralization of a dibasic or tribasic acid by a base.
$N a H_{2} P O_{4}$ is formed when phosphoric acid and sodium hydroxide react in 1:1 molar ratio.
NaOH + H₃PO₄ = NaH₂PO₄ + H₂O

It is an acid salt because it contains two more replaceable hydrogen atoms in its molecule.

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