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Abroaderdefinit io nofacidsandbaseswasdevelo pedby b

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Unformatted text preview: oxide Potassium hydroxide Barium hydroxide COMMON WEAK ACIDS & BASES HC2H3O2 H2CO3 HF HCN H2S Acet ic acid Carbonic acid Hydrofluoric acid Hydrocyanic acid Hydrosulfuric acid NH3 CO(NH2)2 2 Ammo nia Urea Chemistry 52 Chapter 15 BRØNSTED­LOWRY ACIDS & BASES · The Arrhenius definit io n of acids and bases is limited to aqueous solutions. · A broader definit io n of acids and bases was develo ped by B rønsted and Lowry in t the early 20 h century. · According to Brønsted­Lowry definit ion, an acid is a proton donor, and a base is a proton acceptor. HCl (g) + H 2 O (l) ¾¾ H3 O+ (aq) + Cl (aq) ® (Acid) (Base ) NH3 (aq) + H 2 O (l) ¾¾ NH + (aq) + OH (aq) ® 4 (Base) (A ) cid · A substance that can act as a Brønsted­Lowry acid and base (such as water) is called amphiprotic. · In Brønsted­Lowry definit ion, any pair of mo lecules or ions that can be int...
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