When borax is dissolved in waterA. both `B(OH)_(3)` and `[B(OH)_(4)]^(-)`B. only `B(OH)_(3)` is formedC. only `[B(OH)_(4)]^(-)` is formedD. None of these.

When borax is dissolved in waterA. both `B(OH)_(3)` and `[B(OH)_(4)]^(

1.	When borax is dissolved in waterA. both `B(OH)_(3)` and `[B(OH)_(4)]^(-)`B. only `B(OH)_(3)` is formedC. only `[B(OH)_(4)]^(-)` is formedD. None of these.
Answer» Correct Answer - A `[B_(4)O_(5)(OH)_(4)]^(2) + 5H_(2)O rarr 2B(OH)_(3) + 2[B(OH)_(4)]^(-)` ltbtgt This confirms that borax is made up of two triangular `BO_(3)` units and two tetrahedral `BO_(4)` units. When borax is used for titrating against acids, only `[B(OH)_(4)]^(-)` reacts with `HCl` : `2[B(OH)_(4)]^(-) + 2H_(3)O^(+) rarr 2B(OH)_(3) + 4H_(2)O`

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When borax is dissolved in waterA. both `B(OH)_(3)` and `[B(OH)_(4)]^(-)`B. only `B(OH)_(3)` is formedC. only `[B(OH)_(4)]^(-)` is formedD. None of these.

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