Boric acid as Lewis acid (B(OH)₃ is a weak Lewis acid: accepts OH⁻ from water, releasing H⁺ (not Brønsted)

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B(OH)₃ is a weak Lewis acid: accepts OH⁻ from water, releasing H⁺ (not Brønsted self-ionization like Arrhenius acid).

What each symbol means

SymbolWhat it stands for
BElectron-deficient boron

When to use this

Boron has incomplete octet; stabilizes tetrahydroxyborate.