Question

State how acids are defined as per Arrhenius’s and Lowry – Bronsted’s theory.

July 30, 2024

Answer

Arrhenius Theory — Acids are substances which dissociate in aqueous solution to give H⁺ ions.
Strong acids dissociate almost completely, while weak acids dissociate partially.

Lowry – Bronsted’s theory — Acids are proton donors and bases are proton acceptors [proton = H⁺].
HCl [aq.] ⟶ H⁺ + Cl^– [acid – proton donors]
NH₃ + H⁺ ⟶ NH₄⁺ [bases – proton acceptors]

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