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Acids and Bases. Acids: H donorsHCl ? H Cl-CH3COOH ? CH3COO- H Bases: H acceptorsNaOH H ? Na H2ONa2CO3 2 H ? 2 Na H2CO3Amphoteric (both H donor and acceptor)H2O HCl ? H3O Cl-H2O NH3 ? OH- NH4 . Conjugate acid-base pair Examples. HCl(aq) H2O(l) ? H3O (aq) C
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