Question
Boric acid, , is described here as a Lewis acid rather than a direct Brønsted–Lowry proton donor. Use the boric-acid/hydroxide reaction in Exercise 15.76 as a hint.
(a) Give an equation for boric acid reacting with water.
(b) State the geometry of the resulting anion.
(c) Assign the boron hybridization and explain its agreement with that geometry.
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Evidence boundary
This page preserves all three tasks and the hint of OpenStax Chemistry 2e Exercise 15.84. The matching first-edition question is numbered 15.83. “Not a Brønsted–Lowry acid” is interpreted in the stated aqueous mechanism: B(OH)₃ accepts hydroxide rather than directly donating its own proton. The answer does not claim that no boric-acid OH bond can ever be deprotonated under other conditions.