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Decarboxylation

The salt Na...

Question

The salt $N a_{2} H P O_{4}$ is formed when orthophosphoric acid is with an alkali. Find the equivalent weight of othophosphoric acid.

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Solution

$H_{3} P O_{4} + 2 N a O H \to N a_{2} H P O_{4} + 2 H_{2} O$

Equivalent weight of orthophosphoric acid ( $H_{3} P O_{4}$ ) = 3 + 31 + 64 = 98

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