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酸誘発性,酸生成性,自己増幅性分解性ポリマー

Journal of the American Chemical Society +

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2019年1月31日

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Acids are classified by the number of protons per molecule that they can give up in a reaction. Acids such as HCl, HNO3, and HCN that contain one ionizable hydrogen atom in each molecule are called monoprotic acids. Their reactions with water are:



Monoprotic acids: Reactions with water


HCl (aq) + H2O (l) ⟶ H3O+ (aq) + Cl− (aq)


HNO3 (aq) + H2O (l) ⟶ H3O+ (aq) + NO3− (aq)


HCN (aq) + H2O (l) ⇌ H3O+ (aq) + CN− (aq)



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A polyprotic acid contains more than one ionizable hydrogen and undergoes a stepwise ionization process.  If the acid dissociation constants of the ionizable protons differ sufficiently from each other, then the titration curve for such polyprotic acid generates a distinct equivalence point for each of its ionizable hydrogens. Therefore, titration of a diprotic acid results in the formation of two equivalence points, whereas the titration of a triprotic acid results in the formation of three...