It has been observed that `BF_(3)` does not hydrolyses completely whereas `BCl_(3)` or `BBr_(3)` get easily hydrolysed to form `B(OH)_(3)` and `HX`? E

Question

It has been observed that `BF_(3)` does not hydrolyses completely whereas `BCl_(3)` or `BBr_(3)` get easily hydrolysed to form `B(OH)_(3)` and `HX`? E

It has been observed that `BF_(3)` does not hydrolyses completely whereas `BCl_(3)` or `BBr_(3)` get easily hydrolysed to form `B(OH)_(3)` and `HX`? Explain.

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

The greater stability of `B-F` bond as compared to `B-Cl` and `B-Br` bonds is due to additional `pi-` bonding in `B-F` bonds of `BF_(3)` molecules.The `B-Cl` and `B-Br` bonds are relatively weak and are easily cleaved by water forming strong `B-OH` bonds instead of stable addition product `(BF_(3).OH_(2))` formed by `BF_(3)`.