Identify the compound $A$ in the reaction given below.
$N a_{2} B_{4} O_{7} + 2 H_{2} O \to 2 N a O H + A$

Orthoboric acid

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Metaboric Acid

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Tetraboric Acid

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Pyroboric acid

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Solution

The correct option is A Tetraboric Acid
A reaction is given below:
$N a_{2} B_{4} O_{7} + 2 H_{2} O \to 2 N a O H + A$
In the above reaction, $A$ is tetraboric acid.

The complete reaction is as follows:
$N a_{2} B_{4} O_{7} + 2 H_{2} O \to 2 N a O H + H_{2} B_{4} O_{7}$

Hence, option C is the correct answer.

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