Les ions cyanocuprates(I) en milieu aqueux neutre et acide
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Add time:08/13/2019 Source:sciencedirect.com
RésuméL'acidification de solutions aqueuses de tétracyanocuprate(I) de potassium K3 Cu(CN)4 montre par spectroscopie d'absorption u.v. que les espèces se formant successivement à pH neutre puis acide sont Cu(CN)32−, Cu(CN)2− et Cu+: des mesures protométriques associées aux résultats spectrophotométriques permettent de déterminer la constante d'équilibre: Cu(CN)−2+2H+⇆Cu++2HCN logK=2,16
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