Respuesta :
CO₂(g) + H₂O(I) ⇄ H₂CO₃(aq) is a Lewis acid-base reaction.
H₂CO₃(aq) + H₂O(I) ⇄ HCO₃⁻(aq) + H₃O⁺(aq) is a Brønsted-Lowry reaction.
- The Lewis acid (H₂O) is attacked by the Lewis base(CO₂).
- According to the Bronsted-Lowry, bases are the ones that capture protons, while acids are the ones that release them.
- Water becomes the base after carbonic acid, the acid, contributes a proton to it.
- Bicarbonate is a conjugate base because H₂CO₃ is an acid, and hydronium is a conjugate acid since it can receive a proton from water to create carbonic acid once more (it would release the proton to become water).
What is a Lewis acid-base reaction?
- According to the Lewis hypothesis of acid-base reactions, bases give away pairs of electrons while acids take them.
- Therefore, anything that can accept a pair of nonbonding electrons, like the hydrogen ion, is a Lewis acid.
- In other words, an electron-pair acceptor is what a Lewis acid is.
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